Opinion · Supreme Court of the United States

Berkemer v. McCarty

Berkemer v. McCarty, 468 U.S. 420 (1984)

Type
Opinion
Court
Supreme Court of the United States
Jurisdiction
Federal
Date
1984-07-02
Topic
bankruptcy

recognizing that traffic stops, which do not require Miranda warnings, involve restricting the driver’s freedom of action | holding that roadside questioning of motorist stopped for routine traffic violation did not constitute "custodial interrogation" for purposes of Miranda rule | holding that “persons temporarily detained pursuant to [traffic] stops are not ‘in custody’ for the purposes of Miranda ” | holding that individuals detained for routine traffic stops “are not ‘in custody’ for the purposes of Miranda” | holding that a person subjected to only a traffic stop and field sobriety tests is not in custody for the purposes of Miranda | holding that a policeman’s subjective belief did not bear on whether an accused was in custody | holding that roadside questioning of a motorist detained pursuant to a routine traffic stop does not constitute “custodial interrogation” for purposes of Miranda | holding that roadside questioning of a motorist detained pursuant to a routine traffic stop does not constitute “custodial interrogation” for purposes of Miranda | recognizing that a public traffic stop typically lacks the coercive atmosphere of a station house detention | holding that “the only relevant inquiry [to determine whether a suspect was ‘in custody’] is how a reasonable man in the suspect’s position would have understood his situation” | holding that keeping an individual inside of a police car, after a routine traffic stop, does not constitute custodial interrogation for Miranda purposes | holding that Miranda does not apply when a motorist is subjected to roadside questioning during a routine traffic stop | holding that Miranda does not apply when a motorist is subjected to roadside questioning during a routine traffic stop | holding that keeping an individual inside of a police car, after a routine traffic stop, does not constitute custodial interrogation for Miranda purposes | holding that on the facts as stipulated by the parties, the defendant was not in custody for purposes of Miranda when he was questioned by the police | holding that “comparatively nonthreatening character of detentions [associated with ordinary traffic stops] explains the absence of any suggestion in our opinions that Terry stops are subject to the dictates of Miranda ” | recognizing that police and the courts “will continue occasionally to have difficulty deciding exactly when a suspect has been taken into custody” | holding that traffic stops do not require Miranda warnings because they are minimally coercive | holding that traffic stops do not require Miranda warnings because they are minimally coercive | holding that an individual is not required to provide information, including his identification, to law enforcement officer who lacks probable cause to arrest | recognizing that a public traffic stop typically lacks the coercive atmosphere of a station house detention | holding that the safeguards prescribed by Miranda become applicable as soon as a suspect’s freedom of action curtailed to a “degree associated with formal arrest” | holding that “persons temporarily detained 5 pursuant to [ordinary traffic] stops are not ‘in custody’ for the purposes of Miranda” | holding that statements the defendant sought to suppress were not made subject to a custodial interrogation and were therefore admissible at trial | recognizing that a person is in custody when “deprived of his [or her] freedom of action in any significant way” | holding that Miranda does not apply when a motorist is subjected to roadside questioning during a routine traffic stop | recognizing that police and the courts "will continue occasionally to have difficulty deciding exactly when a suspect has been taken into custody" | holding that defendant was not in custody under Miranda when detained by the side of the road as a result of a traffic stop | holding that "persons temporarily detained pursuant to [traffic] stops are not ‘in custody’ for the purposes of Miranda" | recognizing

BERKEMERv. McCARTY,468 U.S. 420(1984)
BERKEMER, SHERIFF OF FRANKLIN COUNTY, OHIOv. McCARTY
CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE SIXTH CIRCUIT
No. 83-710.
Argued April 18, 1984
Decided July 2, 1984
After observing respondent's car weaving in and out of a highway lane, an officer of the Ohio State Highway Patrol forced respondent to stop and asked him to get out of the car. Upon noticing that respondent was having difficulty standing, the officer concluded that respondent would be charged with a traffic offense and would not be allowed to leave the scene, but respondent was not told that he would be taken into custody. When respondent could not perform a field sobriety test without falling, the officer asked him if he had been using intoxicants, and he replied that he had consumed two beers and had smoked marihuana a short time before. The officer then formally arrested respondent and drove him to a county jail, where a blood test failed to detect any alcohol in respondent's blood. Questioning was then resumed, and respondent again made incriminating statements, including an admission that he was "barely" under the influence of alcohol. At no point during this sequence was respondent given the warnings prescribed byMirandav.Arizona,384 U.S. 436. Respondent was charged with the misdemeanor under Ohio law of operating a motor vehicle while under the influence of alcohol and/or drugs, and when the state court denied his motion to exclude the various incriminating statements on the asserted ground that their admission into evidence would violate the Fifth Amendment because respondent had not been informed of his constitutional rights prior to his interrogation, he pleaded "no contest" and was convicted. After the conviction was affirmed on appeal by the Franklin County Court of Appeals and the Ohio Supreme Court denied review, respondent filed an action in Federal District Court for habeas corpus relief. The District Court dismissed the petition, but the Court of Appeals reversed, holding thatMirandawarnings must be given to all individuals prior to custodial interrogation, whether the offense investigated is a felony or a misdemeanor traffic offense, and that respondent's postarrest statements, at least, were inadmissible.Held:
1. A person subjected to custodial interrogation is entitled to the benefit of the procedural safeguards enunciated inMiranda, regardless of the nature or severity of the offense of which he is suspected or forPage 421which he was arrested. Thus, respondent's statements made at the station house were inadmissible since he was "in custody" at least as of the moment he was formally arrested and instructed to get into the police car, and since he was not informed of his constitutional rights at that time. To create an exception to theMirandarule when the police arrest a person for allegedly committing a misdemeanor traffic offense and then question him without informing him of his constitutional rights would substantially undermine the rule's simplicity and clarity and would introduce doctrinal complexities, particularly with respect to situations where the police, in conducting custodial interrogations, do not know whether the person has committed a misdemeanor or a felony. The purposes of theMirandasafeguards as to ensuring that the police do not coerce or trick captive suspects into confessing, relieving the inherently compelling pressures generated by the custodial setting itself, and freeing courts from the task of scrutinizing individual cases to determine, after the fact, whether particular confessions were voluntary, are implicated as much by in-custody questioning of persons suspected of misdemeanors as they are by questioning of persons suspected of felonies. Pp. 428-435.
2. The roadside questioning of a motorist detained pursuant to a routine traffic stop does not constitute "custodial interrogation" for the purposes of theMirandarule. Although an ordinary traffic stop curtails the "freedom of action" of the detained motorist and imposes some pressures on the detainee to answer questions, such pressures do not sufficiently impair the detainee's exercise of his privilege against self-incrimination to require that he be warned of his constitutional rights. A traffic stop is usually brief, and the motorist expects that, while he may be given a citation, in the end he most likely will be allowed to continue on his way. Moreover, the typical traffic stop is conducted in public, and the atmosphere surrounding it is substantially less "police dominated" than that surrounding the kinds of interrogation at issue inMirandaand subsequent cases in whichMirandahas been applied. However, if a motorist who has been detained pursuant to a traffic stop thereafter is subjected to treatment that renders him "in custody" for practical purposes, he is entitled to the full panoply of protections prescribed byMiranda. In this case, the initial stop of respondent's car, by itself, did not render him "in custody," and respondent has failed to demonstrate that, at any time between the stop and the arrest, he was subjected to restraints comparable to those associated with a formal arrest. Although the arresting officer apparently decided as soon as respondent stepped out of his car that he would be taken into custody and charged with a traffic offense, the officer never communicated his intention to respondent. A policeman's unarticulated plan has no bearing on the question whether a suspect was "in custody" at a particular time; thePage 422only relevant inquiry is how a reasonable man in the suspect's position would have understood his situation. Since respondent was not taken into custody for the purposes ofMirandauntil he was formally arrested, his statements made prior to that point were admissible against him. Pp. 435-442.
3. A determination of whether the improper admission of respondent's postarrest statements constituted "harmless error" will not be made by this Court for the cumulative reasons that (i) the issue was not presented to the Ohio courts or to the federal courts below, (ii) respondent's admissions made at the scene of the traffic stop and the statements he made at the police station were not identical, and (iii) the procedural posture of the case makes the use of harmless-error analysis especially difficult because respondent, while preserving his objection to the denial of his pretrial motion to exclude the evidence, elected not to contest the prosecution's case against him and thus has not yet had an opportunity to try to impeach the State's evidence or to present evidence of his own. Pp. 442-445.
716 F.2d 361, affirmed.

MARSHALL, J., delivered the opinion of the Court, in which BURGER, C. J., and BRENNAN, WHITE, BLACKMUN, POWELL, REHNQUIST, and O'CONNOR, JJ., joined. STEVENS, J., filed an opinion concurring in part and concurring in the judgment,post, p. 445.
Alan C. Travisargued the cause for petitioner. With him on the briefs wasStephen Michael Miller.R. William Meeksargued the cause for respondent. With him on the brief werePaul D. Cassidy, Lawrence Herman, andJoel A. Rosenfeld.fn*
JUSTICE MARSHALL delivered the opinion of the Court.
This case presents two related questions: First, does our decision inMirandav.Arizona,384 U.S. 436(1966), govern the admissibility of statements made during custodial interrogation by a suspect accused of a misdemeanor trafficPage 423offense? Second, does the roadside questioning of a motorist detained pursuant to a traffic stop constitute custodial interrogation for the purposes of the doctrine enunciated inMiranda?
I
A
The parties have stipulated to the essential facts. See App. to Pet. for Cert. A-1. On the evening of March 31, 1980, Trooper Williams of the Ohio State Highway Patrol observed respondent's car weaving in and out of a lane on Interstate Highway 270. After following the car for two miles, Williams forced respondent to stop and asked him to get out of the vehicle. When respondent complied, Williams noticed that he was having difficulty standing. At that point, "Williams concluded that [respondent] would be charged with a traffic offense and, therefore, his freedom to leave the scene was terminated."Id., at A-2. However, respondent was not told that he would be taken into custody. Williams then asked respondent to perform a field sobriety test, commonly known as a "balancing test." Respondent could not do so without falling.

While still at the scene of the traffic stop, Williams asked respondent whether he had been using intoxicants. Respondent replied that "he had consumed two beers and had smoked several joints of marijuana a short time before."Ibid. Respondent's speech was slurred, and Williams had difficulty understanding him. Williams thereupon formally placed respondent under arrest and transported him in the patrol car to the Franklin County Jail.

At the jail, respondent was given an intoxilyzer test to determine the concentration of alcohol in his blood.1The test did not detect any alcohol whatsoever in respondent's system. Williams then resumed questioning respondentPage 424in order to obtain information for inclusion in the State Highway Patrol Alcohol Influence Report. Respondent answered affirmatively a question whether he had been drinking. When then asked if he was under the influence of alcohol, he said, "I guess, barely."Ibid. Williams next asked respondent to indicate on the form whether the marihuana he had smoked had been treated with any chemicals. In the section of the report headed "Remarks," respondent wrote, "No ang[el] dust or PCP in the pot. Rick McCarty." App. 2.

At no point in this sequence of events did Williams or anyone else tell respondent that he had a right to remain silent, to consult with an attorney, and to have an attorney appointed for him if he could not afford one.
B
Respondent was charged with operating a motor vehicle while under the influence of alcohol and/or drugs in violation of Ohio Rev. Code Ann. §4511.19(Supp. 1983). Under Ohio law, that offense is a first-degree misdemeanor and in punishable by fine or imprisonment for up to six months. § 2929.21 (1982). Incarceration for a minimum of three days is mandatory. § 4511.99 (Supp. 1983).

Respondent moved to exclude the various incriminating statements he had made to Trooper Williams on the ground that introduction into evidence of those statements would violate the Fifth Amendment insofar as he had not been informed of his constitutional rights prior to his interrogation. When the trial court denied the motion, respondent pleaded "no contest" and was found guilty.2He was sentenced to 90Page 425days in jail, 80 of which were suspended, and was fined $300, $100 of which were suspended.

On appeal to the Franklin County Court of Appeals, respondent renewed his constitutional claim. Relying on a prior decision by the Ohio Supreme Court, which held that the rule announced inMiranda"is not applicable to misdemeanors,"Statev.Pyle,19 Ohio St.2d 64,249 N.E.2d 826(1969), cert. denied,396 U.S. 1007(1970), the Court of Appeals rejected respondent's argument and affirmed his conviction.Statev.McCarty, No. 80AP-680 (Mar. 10, 1981). The Ohio Supreme Court dismissed respondent's appeal on the ground that it failed to present a "substantial constitutional question."Statev.McCarty, No. 81-710 (July 1, 1981).

Respondent then filed an action for a writ of habeas corpus in the District Court for the Southern District of Ohio.3The District Court dismissed the petition, holding that "Mirandawarnings do not have to be given prior to in custody interrogation of a suspect arrested for a traffic offense."McCartyv.Herdman, No. C-2-81-1118 (Dec. 11, 1981).

A divided panel of the Court of Appeals for the Sixth Circuit reversed, holding that "Mirandawarnings must be given toallindividuals prior to custodial interrogation, whether the offense investigated be a felony or a misdemeanor traffic offense."McCartyv.Herdman,716 F.2d 361,363(1983) (emphasis in original). In applying this principle to the facts of the case, the Court of Appeals distinguished between the statements made by respondent before and after his formal arrest.4The postarrest statements, the court ruled, werePage 426plainly inadmissible; because respondent was not warned of his constitutional rights prior to or "[a]t the point that Trooper Williams took [him] to the police station," his ensuing admissions could not be used against him.Id., at 364. The court's treatment of respondent's prearrest statements was less clear. It eschewed a holding that "the mere stopping of a motor vehicle triggersMiranda,"ibid., but did not expressly rule that the statements made by respondent at the scene of the traffic stop could be used against him. In the penultimate paragraph of its opinion, the court asserted that "[t]he failure to advise [respondent] of his constitutional rights renderedat least someof his statements inadmissible,"ibid. (emphasis added), suggesting that the court was uncertain as to the status of the prearrest confessions.5"Because [respondent] was convicted on inadmissible evidence," the court deemed it necessary to vacate his conviction and order the District Court to issue a writ of habeas corpus.Ibid.6However, the Court of Appeals did not specify which statements, if any, could be used against respondent in a retrial.

We granted certiorari to resolve confusion in the federal and state courts regarding the applicability of our ruling inPage 427Mirandato interrogations involving minor offenses7and to questioning of motorists detained pursuant to traffic stops.8464 U.S. 1038(1984).Page 428
II
The Fifth Amendment provides: "No person . . . shall be compelled in any criminal case to be a witness against himself . . . ." It is settled that this provision governs state as well as federal criminal proceedings.Malloyv.Hogan,378 U.S. 1,8(1964).

InMirandav.Arizona,384 U.S. 436(1966), the Court addressed the problem of how the privilege against compelled self-incrimination guaranteed by the Fifth Amendment could be protected from the coercive pressures that can be brought to bear upon a suspect in the context of custodial interrogation. The Court held:
"[T]he prosecution may not use statements, whether exculpatory or inculpatory, stemming from custodial interrogation of [a] defendant unless it demonstrates the use of procedural safeguards effective to secure the privilege against self-incrimination. By custodial interrogation, we mean questioning initiated by law enforcement officers after a person has been taken into custody or otherwise deprived of his freedom of action in any significant way. As for the procedural safeguards to be employed, unless other fully effective means are devised to inform accused persons of their right of silence and to assure a continuous opportunity to exercise it, thePage 429following measures are required. Prior to any questioning, the person must be warned that he has a right to remain silent, that any statement he does make may be used as evidence against him, and that he has a right to the presence of an attorney, either retained or appointed."Id., at 444 (footnote omitted).


In the years since the decision inMiranda, we have frequently reaffirmed the central principle established by that case: if the police take a suspect into custody and then ask him questions without informing him of the rights enumerated above, his responses cannot be introduced into evidence to establish his guilt.9See,e. g., Estellev.Smith,451 U.S. 454,466-467(1981);Rhode Islandv.Innis,446 U.S. 291,297-298(1980) (dictum);Orozcov.Texas,394 U.S. 324,326-327(1969);Mathisv.United States,391 U.S. 1,3-5(1968).10

Petitioner asks us to carve an exception out of the foregoing principle. When the police arrest a person for allegedly committing a misdemeanor traffic offense and then ask him questions without telling him his constitutional rights, petitioner argues, his responses should be admissible against him.11We cannot agree.Page 430

One of the principal advantages of the doctrine that suspects must be given warnings before being interrogated while in custody is the clarity of that rule.
"Miranda's holding has the virtue of informing police and prosecutors with specificity as to what they may do in conducting custodial interrogation, and of informing courts under what circumstances statements obtained during such interrogation are not admissible. This gain in specificity, which benefits the accused and the State alike, has been thought to outweigh the burdens that the decision inMirandaimposes on law enforcement agencies and the courts by requiring the suppression of trust-worthy and highly probative evidence even though the confession might be voluntary under traditional Fifth Amendment analysis."Farev.Michael C.,442 U.S. 707,718(1979).


The exception toMirandaproposed by petitioner would substantially undermine this crucial advantage of the doctrine. The police often are unaware when they arrest a person whether he may have committed a misdemeanor or a felony. Consider, for example, the reasonably common situation in which the driver of a car involved in an accident is taken into custody. Under Ohio law, both driving while under the influence of intoxicants and negligent vehicular homicide are misdemeanors, Ohio Rev. Code Ann. §§2903.07,4511.99(Supp. 1983), while reckless vehicular homicide is a felony, § 2903.06 (Supp. 1983). When arresting a person for causing a collision, the police may not know which of these offenses he may have committed. Indeed, the nature of his offense may depend upon circumstances unknowable to the police, such as whether the suspect has previously committedPage 431a similar offense12or has a criminal record of some other kind. It may even turn upon events yet to happen, such as whether a victim of the accident dies. It would be unreasonable to expect the police to make guesses as to the nature of the criminal conduct at issue before deciding how they may interrogate the suspect.13

Equally importantly, the doctrinal complexities that would confront the courts if we accepted petitioner's proposal would be Byzantine. Difficult questions quickly spring to mind: For instance, investigations into seemingly minor offenses sometimes escalate gradually into investigations into more serious matters;14at what point in the evolution of an affair of this sort would the police be obliged to giveMirandawarnings to a suspect in custody? What evidence would be necessary to establish that an arrest for a misdemeanor offensePage 432was merely a pretext to enable the police to interrogate the suspect (in hopes of obtaining information about a felony) without providing him the safeguards prescribed byMiranda?15The litigation necessary to resolve such matters would be time-consuming and disruptive of law enforcement. And the end result would be an elaborate set of rules, interlaced with exceptions and subtle distinctions, discriminating between different kinds of custodial interrogations.16Neither the police nor criminal defendants would benefit from such a development.

Absent a compelling justification we surely would be unwilling so seriously to impair the simplicity and clarity of the holding ofMiranda. Neither of the two arguments proffered by petitioner constitutes such a justification. Petitioner first contends thatMirandawarnings are unnecessary when a suspect is questioned about a misdemeanor traffic offense, because the police have no reason to subject such a suspect to the sort of interrogation that most trouble the Court inMiranda. We cannot agree that the dangers of police abuse are so slight in this context. For example, the offense of driving while intoxicated is increasingly regarded in many jurisdictions as a very serious matter.17Especially when the intoxicant at issue is a narcotic drug rather than alcohol, the police sometimes have difficulty obtaining evidence of this crime. Under such circumstances, the incentive for the police to try to induce the defendant to incriminatePage 433himself may well be substantial. Similar incentives are likely to be present when a person is arrested for a minor offense but the police suspect that a more serious crime may have been committed. Seesupra, at 431-432.

We do not suggest that there is any reason to think improper efforts were made in this case to induce respondent to make damaging admissions. More generally, we have no doubt that, in conducting most custodial interrogations of persons arrested for misdemeanor traffic offenses, the police behave responsibly and do not deliberately exert pressures upon the suspect to confess against his will. But the same might be said of custodial interrogations of persons arrested for felonies. The purposes of the safeguards prescribed byMirandaare toensurethat the police do not coerce or trick captive suspects into confessing,18to relieve the "`inherently compelling pressures'" generated by the custodial setting itself, "`which work to undermine the individual's will to resist,'"19and as much as possible to free courts from the task of scrutinizing individual cases to try to determine, after the fact, whether particular confessions were voluntary.20Those purposes are implicated as much by in-custody questioning of persons suspected of misdemeanors as they are by questioning of persons suspected of felonies.Page 434

Petitioner's second argument is that law enforcement would be more expeditious and effective in the absence of a requirement that persons arrested for traffic offenses be informed of their rights. Again, we are unpersuaded. The occasions on which the police arrest and then interrogate someone suspected only of a misdemeanor traffic offense are rare. The police are already well accustomed to givingMirandawarnings to persons taken into custody. Adherence to the principle thatallsuspects must be given such warnings will not significantly hamper the efforts of the police to investigate crimes.

We hold therefore that a person subjected to custodial interrogation is entitled to the benefit of the procedural safeguards enunciated inMiranda,21regardless of the nature or severity of the offense of which he is suspected or for which he was arrested.

The implication of this holding is that the Court of Appeals was correct in ruling that the statements made by respondent at the County Jail were inadmissible. There can be no question that respondent was "in custody" at least as of the moment he was formally placed under arrest and instructed to get into the police car. Because he was not informed ofPage 435his constitutional rights at that juncture, respondent's subsequent admissions should not have been used against him.
III
To assess the admissibility of the self-incriminating statements made by respondent prior to his formal arrest, we are obliged to address a second issue concerning the scope of our decision inMiranda:whether the roadside questioning of a motorist detained pursuant to a routine traffic stop should be considered "custodial interrogation." Respondent urges that it should,22on the ground thatMirandaby its terms applies whenever "a person has been taken into custodyorotherwise deprived of his freedom of action in any significantway,"384 U.S., at 444(emphasis added); seeid., at 467.23Page 436Petitioner contends that a holding that every detained motorist must be advised of his rights before being questioned would constitute an unwarranted extension of theMirandadoctrine.

It must be acknowledged at the outset that a traffic stop significantly curtails the "freedom of action" of the driver and the passengers, if any, of the detained vehicle. Under the law of most States, it is a crime either to ignore a policeman's signal to stop one's car or, once having stopped, to drive away without permission.E. g., Ohio Rev. Code Ann. §4511.02(1982).24Certainly few motorists would feel free either to disobey a directive to pull over or to leave the scene of a traffic stop without being told they might do so.25Partly for these reasons, we have long acknowledged that "stopping an automobile and detaining its occupants constitute a `seizure'Page 437within the meaning of [the Fourth] Amendmen[t], even though the purpose of the stop is limited and the resulting detention quite brief."Delawarev.Prouse,440 U.S. 648,653(1979) (citations omitted).

However, we decline to accord talismanic power to the phrase in theMirandaopinion emphasized by respondent. Fidelity to the doctrine announced inMirandarequires that it be enforced strictly, but only in those types of situations in which the concerns that powered the decision are implicated. Thus, we must decide whether a traffic stop exerts upon a detained person pressures that sufficiently impair his free exercise of his privilege against self-incrimination to require that he be warned of his constitutional rights.

Two features of an ordinary traffic stop mitigate the danger that a person questioned will be induced "to speak where he would not otherwise do so freely,"Mirandav.Arizona,384 U.S., at 467. First, detention of a motorist pursuant to a traffic stop is presumptively temporary and brief. The vast majority of roadside detentions last only a few minutes. A motorist's expectations, when he sees a policeman's light flashing behind him, are that he will be obliged to spend a short period of time answering questions and waiting while the officer checks his license and registration, that he may then be given a citation, but that in the end he most likely will be allowed to continue on his way.26In this respect,Page 438questioning incident to an ordinary traffic stop is quite different from stationhouse interrogation, which frequently is prolonged, and in which the detainee often is aware that questioning will continue until he provides his interrogators the answers they seek. Seeid., at 451.27

Second, circumstances associated with the typical traffic stop are not such that the motorist feels completely at the mercy of the police. To be sure, the aura of authority surrounding an armed, uniformed officer and the knowledge that the officer has some discretion in deciding whether to issue a citation, in combination, exert some pressure on the detainee to respond to questions. But other aspects of the situation substantially offset these forces. Perhaps most importantly, the typical traffic stop is public, at least to some degree. Passersby, on foot or in other cars, witness the interaction of officer and motorist. This exposure to public view both reduces the ability of an unscrupulous policeman to use illegitimate means to elicit self-incriminating statements and diminishes the motorist's fear that, if he does not cooperate, he will be subjected to abuse. The fact that the detained motorist typically is confronted by only one or at most two policemen further mutes his sense of vulnerability. In short, the atmospherePage 439surrounding an ordinary traffic stop is substantially less "police dominated" than that surrounding the kinds of interrogation at issue inMirandaitself, see384 U.S., at 445,491-498, and in the subsequent cases in which we have appliedMiranda.28

In both of these respects, the usual traffic stop is more analogous to a so-called "Terrystop," seeTerryv.Ohio,392 U.S. 1(1968), than to a formal arrest.29Under the Fourth Amendment, we have held, a policeman who lacks probable cause but whose "observations lead him reasonably to suspect" that a particular person has committed, is committing, or is about to commit a crime, may detain that person briefly30in order to "investigate the circumstances that provoke suspicion."United Statesv.Brignoni-Ponce,422 U.S. 873,881(1975). "[T]he stop and inquiry must be `reasonably related in scope to the justification for their initiation.'"Ibid. (quotingTerryv.Ohio, supra, at 29.) Typically, this means that the officer may ask the detainee a moderate number of questions to determine his identity and to try to obtain information confirming or dispelling the officer's suspicions. But the detainee is not obliged to respond. And, unless the detainee's answers provide the officer with probable cause to arrest him,31he must then bePage 440released.32The comparatively nonthreatening character of detentions of this sort explains the absence of any suggestion in our opinions thatTerrystops are subject to the dictates ofMiranda. The similarly noncoercive aspect of ordinary traffic stops prompts us to hold that persons temporarily detained pursuant to such stops are not "in custody" for the purposes ofMiranda.

Respondent contends that to "exempt" traffic stops from the coverage ofMirandawill open the way to widespread abuse. Policemen will simply delay formally arresting detained motorist, and will subject them to sustained and intimidating interrogation at the scene of their initial detention. Cf.Statev.Roberti,293 Or. 59,95,644 P.2d 1104,1125(1982) (Linde, J., dissenting) (predicting the emergence of a rule that "a person has not been significantly deprived of freedom of action forMirandapurposes as long as he is in his own car, even if it is surrounded by several patrol cars and officers with drawn weapons"), withdrawn on rehearing,293 Or. 236,646 P.2d 1341(1982), cert. pending, No. 82-315. The net result, respondent contends, will be a serious threat to the rights that theMirandadoctrine is designed to protect.

We are confident that the state of affairs projected by respondent will not come to pass. It is settled that the safeguards prescribed byMirandabecome applicable as soon as a suspect's freedom of action is curtailed to a "degree associated with formal arrest."Californiav.Beheler,463 U.S. 1121,1125(1983)(per curiam). If a motorist who has been detained pursuant to a traffic stop thereafter is subjected to treatment that renders him "in custody" for practical purposes, he will be entitled to the full panoply of protections prescribed byMiranda. SeeOregonv.Mathiason,429 U.S. 492,495(1977)(per curiam).Page 441

Admittedly, our adherence to the doctrine just recounted will mean that the police and lower courts will continue occasionally to have difficulty deciding exactly when a suspect has been taken into custody. Either a rule thatMirandaapplies to all traffic stops or a rule that a suspect need not be advised of his rights until he is formally placed under arrest would provide a clearer, more easily administered line. However, each of these two alternatives has drawbacks that make it unacceptable. The first would substantially impede the enforcement of the Nation's traffic laws — by compelling the police either to take the time to warn all detained motorists of their constitutional rights or to forgo use of self-incriminating statements made by those motorists — while doing little to protect citizens' Fifth Amendment rights.33The second would enable the police to circumvent the constraints on custodial interrogations established byMiranda.

Turning to the case before us, we find nothing in the record that indicates that respondent should have been givenMirandawarnings at any point prior to the time Trooper Williams placed him under arrest. For the reasons indicated above, we reject the contention that the initial stop of respondent's car, by itself, rendered him "in custody." And respondent has failed to demonstrate that, at any time between the initial stop and the arrest, he was subjected to restraints comparable to those associated with a formal arrest. Only a short period of time elapsed between the stop and the arrest.34At no point during that interval was respondentPage 442informed that his detention would not be temporary. Although Trooper Williams apparently decided as soon as respondent stepped out of his car that respondent would be taken into custody and charged with a traffic offense, Williams never communicated his intention to respondent. A policeman's unarticulated plan has no bearing on the question whether a suspect was "in custody" at a particular time; the only relevant inquiry is how a reasonable man in the suspect's position would have understood his situation.35Nor do other aspects of the interaction of Williams and respondent support the contention that respondent was exposed to "custodial interrogation" at the scene of the stop. From aught that appears in the stipulation of facts, a single police officer asked respondent a modest number of questions and requested him to perform a simple balancing test at a location visible to passing motorists.36Treatment of this sort cannot fairly be characterized as the functional equivalent of formal arrest.

We conclude, in short, that respondent was not taken into custody for the purposes ofMirandauntil Williams arrested him. Consequently, the statements respondent made prior to that point were admissible against him.
IV
We are left with the question of the appropriate remedy. In his brief, petitioner contends that, if we agree with thePage 443Court of Appeals that respondent's postarrest statements should have been suppressed but conclude that respondent's prearrest statements were admissible, we should reverse the Court of Appeals' judgment on the ground that the state trial court's erroneous refusal to exclude the postarrest admissions constituted "harmless error" within the meaning ofChapmanv.California,386 U.S. 18(1967). Relying onMiltonv.Wainwright,407 U.S. 371(1972), petitioner argues that the statements made by respondent at the police station "were merely recitations of what respondent had already admitted at the scene of the traffic arrest" and therefore were unnecessary to his conviction. Brief for Petitioner 25. We reject this proposed disposition of the case for three cumulative reasons.

First, the issue of harmless error was not presented to any of the Ohio courts, to the District Court, or to the Court of Appeals.37Though, when reviewing a judgment of a federal court, we have jurisdiction to consider an issue not raised below, seeCarlsonv.Green,446 U.S. 14,17, n. 2 (1980), we are generally reluctant to do so,Adickesv.S. H. KressCo.,398 U.S. 144,147, n. 2 (1970).38

Second, the admissions respondent made at the scene of the traffic stop and the statements he made at the police station were not identical. Most importantly, though respondent at the scene admitted having recently drunk beer and smoked marihuana, not until questioned at the station did hePage 444acknowledge being under the influence of intoxicants, an essential element of the crime for which he was convicted.39This fact assumes significance in view of the failure of the intoxilyzer test to discern any alcohol in his blood.

Third, the case arises in a procedural posture that makes the use of harmless-error analysis especially difficult.40This is not a case in which a defendant, after denial of a suppression motion, is given a full trial resulting in his conviction. Rather, after the trial court ruled that all of respondent's self-incriminating statements were admissible, respondent elected not to contest the prosecution's case against him, while preserving his objection to the denial of his pretrial motion.41As a result, respondent has not yet had an opportunity to try to impeach the State's evidence or to present evidence of his own. For example, respondent alleges that, at the time of his arrest, he had an injured back and a limp42and that those ailments accounted for his difficulty getting out of the car and performing the balancing test; because he pleaded "no contest," he never had a chance to make that argument to a jury. It is difficult enough, on the basis of a complete record of a trial and the parties' contentions regarding the relative importance of each portion of the evidence presented, to determine whether the erroneous admission of particular material affected the outcome. Without the benefit of such a record in this case, we decline to rule thatPage 445the trial court's refusal to suppress respondent's postarrest statements "was harmless beyond a reasonable doubt." SeeChapmanv.California,386 U.S., at 24.

Accordingly, the judgment of the Court of Appeals isAffirmed.
JUSTICE STEVENS, concurring in part and concurring in the judgment.
The only question presented by the petition for certiorari reads as follows:
"Whether law enforcement officers must give `Mirandawarnings' to individuals arrested for misdemeanor traffic offenses."


In Parts I, II, and IV of its opinion, the Court answers that question in the affirmative and explains why that answer requires that the judgment of the Court of Appeals be affirmed. Part III of the Court's opinion is written for the purpose of discussing the admissibility of statements made by respondent "prior to his formal arrest," seeante, at 435. That discussion is not necessary to the disposition of the case, nor necessary to answer the only question presented by the certiorari petition. Indeed, the Court of Appeals quite properly did not pass on the question answered in Part III since it was entirely unnecessary to the judgment in this case. It thus wisely followed the cardinal rule that a court should not pass on a constitutional question in advance of the necessity of deciding it. See,e. g., Ashwanderv.TVA,297 U.S. 288,346(1936) (Brandeis, J., concurring).

Lamentably, this Court fails to follow the course of judicial restraint that we have set for the entire federal judiciary. In this case, it appears the reason for reaching out to decide a question not passed upon below and unnecessary to the judgment is that the answer to the question upon which we granted review is so clear under our settled precedents that the majority — its appetite for deciding constitutional questionsPage 446only whetted — is driven to serve up a more selectable issue to satiate it. I had thought it clear, however, that no matter how interesting or potentially important a determination on a question of constitutional law may be, "broad considerations of the appropriate exercise of judicial power prevent such determinations unless actually compelled by the litigation before the Court."Barrv.Matteo,355 U.S. 171,172(1957)(per curiam). Indeed, this principle of restraint grows in importance the more problematic the constitutional issue is. SeeNew Yorkv.Uplinger,467 U.S. 246,251(1984) (STEVENS, J., concurring).

Because I remain convinced that the Court should abjure the practice of reaching out to decide cases on the broadest grounds possible,e. g., United Statesv.Doe,465 U.S. 605,619-620(1984) (STEVENS, J., concurring in part and dissenting in part);Grove City Collegev.Bell,465 U.S. 555,579(1984) (STEVENS, J., concurring in part and concurring in result);Coloradov.Nunez,465 U.S. 324,327-328(1984) (STEVENS, J., concurring);United Statesv.Gouveia,467 U.S. 180,193(1984) (STEVENS, J., concurring in judgment);Firefightersv.Stotts,467 U.S. 561,590-591(1984) (STEVENS, J., concurring in judgment); see also,Universityof California Regentsv.Bakke,438 U.S. 265,411-412(1978) (STEVENS, J., concurring in judgment in part and dissenting in part);Monellv.New York City Dept. of SocialServices,436 U.S. 658,714(1978) (STEVENS, J., concurring in part); cf.Sneppv.United States,444 U.S. 507,524-525(1980) (STEVENS, J., dissenting), I do not join Part III of the Court's opinion.Page 447
  1. Page 422Anthony J. Celebrezze, Jr., Attorney General, andRichard DavidDrake, Assistant Attorney General, filed a brief for the State of Ohio asamicus curiaeurging reversal.Jacob D. FuchsbergandCharles S. Simsfiled a brief for the American Civil Liberties Union et al. asamici curiaeurging affirmance. ↩
  2. Page 423 For a description of the technology associated with the intoxilyzer test, seeCaliforniav.Trombetta,467 U.S. 479,481-482(1984). ↩
  3. Page 424 Ohio Rev. Code Ann. §2937.07(1982) provides, in pertinent part: "If the plea be `no contest' or words of similar import in pleading to a misdemeanor, it shall constitute a stipulation that the judge or magistrate may make [a] finding of guilty or not guilty from the explanation of circumstances, and if guilt be found, impose or continue for sentence accordingly."

    Ohio Rule of Criminal Procedure 12(H) provides: "The plea of no contest does not preclude a defendant from asserting upon appeal that the trial Page 425 court prejudicially erred in ruling on a pretrial motion, including a pretrial motion to suppress evidence." ↩
  4. Page 425 On respondent's motion, the state trial court stayed execution of respondent's sentence pending the outcome of his application for a writ of habeas corpus.Statev.McCarty, No. 80-TF-C-123915 (Franklin County Mun. Ct., July 28, 1981). ↩
  5. Page 425 In differentiating respondent's various admissions, the Court of Appeals accorded no significance to the parties' stipulation that respondent's Page 426 "freedom to leave the scene was terminated" at the moment Trooper Williams formed an intent to arrest respondent. The court reasoned that a "`reasonable man' test," not a subjective standard, should control the determination of when a suspect is taken into custody for the purposes ofMiranda. McCartyv.Herdman,716 F.2d, at 362, n. 1 (quotingLowev.United States,407 F.2d 1391,1397(CA9 1969)). ↩
  6. Page 426 Judge Wellford, dissenting, observed: "As I read the opinion, the majority finds that McCarty was not in custody until he was formally placed under arrest."716 F.2d, at 364. The majority neither accepted nor disavowed this interpretation of its ruling. ↩
  7. Page 426 Judge Wellford's dissent was premised on his view that the incriminating statements made by respondent after he was formally taken into custody were "essentially repetitious" of the statements he made before his arrest. Reasoning that the prearrest statements were admissible, Judge Wellford argued that the trial court's failure to suppress the postarrest statements was "harmless error."Id., at 365. ↩
  8. Page 427 InClayv.Riddle,541 F.2d 456(1976), the Court of Appeals for the Fourth Circuit held that persons arrested for traffic offenses need not be givenMirandawarnings.Id., at 457. Several state courts have taken similar positions. SeeStatev.Bliss,238 A.2d 848,850(Del. 1968);County of Dadev.Callahan,259 So.2d 504,507(Fla.App. 1971), cert. denied,265 So.2d 50(Fla. 1972);Statev.Gabrielson,192 N.W.2d 792,796(Iowa 1971), cert. denied,409 U.S. 912(1972);Statev.Angelo,251 La. 250,254-255,203 So.2d 710,711-717(1967);Statev.Neal,476 S.W.2d 547,553(Mo. 1972);Statev.Macuk,57 N.J. 1,15-16,268 A.2d 1,9(1970). Other state courts have refused to limit in this fashion the reach ofMiranda. SeeCampbellv.Superior Court,106 Ariz. 542,552,479 P.2d 685,695(1971);Commonwealthv.Brennan,386 Mass. 772,775,438 N.E.2d 60,63(1982);Statev.Kinn,288 Minn. 31,35,178 N.W.2d 888,891(1970);Statev.Lawson,285 N.C. 320,327-328,204 S.E.2d 843,848(1974);Statev.Fields,294 N.W.2d 404,409(N.D. 1980) (Mirandaapplicable at least to "more serious [traffic] offense[s] such as driving while intoxicated");Statev.Buchholz,11 Ohio St.3d 24,28,462 N.E.2d 1222,1226(1984) (overrulingStatev.Pyle,19 Ohio St.2d 64,249 N.E.2d 826(1969), cert. denied,396 U.S. 1007(1970), and holding that "Mirandawarnings must be given prior to any custodial interrogation regardless of whether the individual is suspected of committing a felony or misdemeanor");Statev.Roberti,293 Or. 59,644 P.2d 1104, on rehearing,293 Or. 236,646 P.2d 1341(1982), cert. pending, No. 82-315;Commonwealthv.Meyer,488 Pa. 297,305-306,412 A.2d 517,521(1980);Holmanv.Cox,598 P.2d 1331,1333(Utah 1979);Statev.Darnell,8 Wn. App. 627,628,508 P.2d 613,615, cert. denied,414 U.S. 1112(1973). ↩
  9. Page 427 The lower courts have dealt with the problem of roadside questioning in a wide variety of ways. For a spectrum of positions, seeStatev.Tellez,6 Ariz. App. 251,256,431 P.2d 691,696(1967) (Mirandawarning must be given as soon as the policeman has "reasonable grounds" to believe the detained motorist has committed an offense);Newberryv.State,552 S.W.2d 457,461(Tex.Crim.App. 1977) (Mirandaapplies when there is probable cause to arrest the driver and the policeman "consider[s] the driver] to be in custody and would not . . . let him leave");Statev.Roberti,293 Ore., at 236,646 P.2d, at 1341(Mirandaapplies as soon as the officer forms an intention to arrest the motorist);Peoplev.Ramirez,199 Colo. 367,372, n. 5,609 P.2d 616,618, n. 5 (1980) (en banc);Statev.Darnell, supra, at 629-630,508 P.2d, at 615(driver is "in custody" forMirandapurposes at Page 428 least by the time he is asked to take a field sobriety test);Commonwealthv.Meyer, supra, at 307,412 A.2d, at 521-522(warnings are required as soon as the motorist "reasonably believes his freedom of action is being restricted");Lowev.United States, supra, at 1394, 1396;Statev.Sykes,285 N.C. 202,205-206,203 S.E.2d 849,850(1974) (Mirandais inapplicable to a traffic stop until the motorist is subjected to formal arrest or the functional equivalent thereof);Allenv.United States, 129 U.S.App.D.C. 61, 63-64,390 F.2d 476,478-479("[S]ome inquiry can be made [without givingMirandawarnings] as part of an investigation notwithstanding limited and brief restraints by the police in their effort to screen crimes from relatively routine mishaps"), modified, 131 U.S.App.D.C. 358,404 F.2d 1335(1968);Holmanv.Cox, supra, at 1333 (Mirandaapplies upon formal arrest). ↩
  10. Page 429 InHarrisv.New York,401 U.S. 222(1971), the Court did sanction use of statements obtained in violation ofMirandato impeach the defendant who had made them. The Court was careful to note, however, that the jury had been instructed to consider the statements "only in passing on [the defendant's] credibility and not as evidence of guilt."401 U.S., at 223. ↩
  11. Page 429 The one exception to this consistent line of decisions isNew Yorkv.Quarles,467 U.S. 649(1984). The Court held in that case that, when the police arrest a suspect under circumstances presenting an imminent danger to the public safety, they may without informing him of his constitutional rights ask questions essential to elicit information necessary to neutralize the threat to the public. Once such information has been obtained, the suspect must be given the standard warnings. ↩
  12. Page 429 Not all of petitioner's formulations of his proposal are consistent. At some points in his brief and at oral argument, petitioner appeared to advocate an exception solely for drunken-driving charges; at other points, he Page 430 seemed to favor a line between felonies and misdemeanors. Because all of these suggestions suffer from similar infirmities, we do not differentiate among them in the ensuing discussion. ↩
  13. Page 431 Thus, under Ohio law, while a first offense of negligent vehicular homicide is a misdemeanor, a second offense is a felony. Ohio Rev. Code Ann. §2903.07(Supp. 1983). In some jurisdictions, a certain number of convictions for drunken driving triggers a quantum jump in the status of the crime. In South Dakota, for instance, first and second offenses for driving while intoxicated are misdemeanors, but a third offense is a felony. SeeSolemv.Helm,463 U.S. 277,280, n. 4 (1983). ↩
  14. Page 431 Cf.Welshv.Wisconsin,466 U.S. 740,761(1984) (WHITE, J., dissenting) (observing that officers in the field frequently "have neither the time nor the competence to determine" the severity of the offense for which they are considering arresting a person).

    It might be argued that the police would not need to make such guesses; whenever in doubt, they could ensure compliance with the law by giving the fullMirandawarnings. It cannot be doubted, however, that in some cases a desire to induce a suspect to reveal information he might withhold if informed of his rights would induce the police not to take the cautious course. ↩
  15. Page 431 See,e. g., United Statesv.Schultz,442 F. Supp. 176(Md. 1977) (investigation of erratic driving developed into inquiry into narcotics offenses and terminated in a charge of possession of a sawed-off shotgun);United Statesv.Hatchel,329 F. Supp. 113(Mass. 1971) (investigation into offense of driving the wrong way on a one-way street yielded a charge of possession of a stolen car). ↩
  16. Page 432 Cf.United Statesv.Robinson,414 U.S. 218,221, n. 1 (1973);id., at 238, n. 2 (POWELL, J., concurring) (discussing the problem of determining if a traffic arrest was used as a pretext to legitimate a warrantless search for narcotics). ↩
  17. Page 432 Cf.New Yorkv.Quarles,467 U.S., at 663-664(O'CONNOR, J., concurring in judgment in part and dissenting in part). ↩
  18. Page 432 See Brief for State of Ohio asAmicus Curiae18-21 (discussing the "National Epidemic Of Impaired Drivers" and the importance of stemming it); cf.South Dakotav.Neville,459 U.S. 553,558-559(1983);Perezv.Campbell,402 U.S. 637,657,672(1971) (BLACKMUN, J., concurring in part and dissenting in part). ↩
  19. Page 433 SeeRhode Islandv.Innis,446 U.S. 291,299,301(1980);Mirandav.Arizona,384 U.S. 436,445-458(1966). ↩
  20. Page 433Minnesotav.Murphy,465 U.S. 420,430(1984) (quotingMirandav.Arizona, supra, at 467); seeEstellev.Smith,451 U.S. 454,467(1981);United Statesv.Washington,431 U.S. 181,187, n. 5 (1977). ↩
  21. Page 433 Cf. Development in the Law — Confessions, 79 Harv. L. Rev. 935, 954-984 (1966) (describing the difficulties encountered by state and federal courts, during the period preceding the decision inMiranda, in trying to distinguish voluntary from involuntary confessions).

    We do not suggest that compliance withMirandaconclusively establishes the voluntariness of a subsequent confession. But cases in which a defendant can make a colorable argument that a self-incriminating statement was "compelled" despite the fact that the law enforcement authorities adhered to the dictates ofMirandaare rare. ↩
  22. Page 434 The parties urge us to answer two questions concerning the precise scope of the safeguards required in circumstances of the sort involved in this case. First, we are asked to consider what a State must do in order to demonstrate that a suspect who might have been under the influence of drugs or alcohol when subjected to custodial interrogation nevertheless understood and freely waived his constitutional rights. Second, it is suggested that we decide whether an indigent suspect has a right, under the Fifth Amendment, to have an attorney appointed to advise him regarding his responses to custodial interrogation when the alleged offense about which he is being questioned is sufficiently minor that he would not have a right, under the Sixth Amendment, to the assistance of appointed counsel at trial, seeScottv.Illinois,440 U.S. 367(1979). We prefer to defer resolution of such matters to a case in which law enforcement authorities have at least attempted to inform the suspect of rights to which he is indisputably entitled. ↩
  23. Page 435 In his brief, respondent hesitates to embrace this proposition fully, advocating instead a more limited rule under which questioning of a suspect detained pursuant to a traffic stop would be deemed "custodial interrogation" if and only if the police officer had probable cause to arrest the motorist for a crime. See Brief for Respondent 39-40, 46. This ostensibly more modest proposal has little to recommend it. The threat to a citizen's Fifth Amendment rights thatMirandawas designed to neutralize has little to do with the strength of an interrogating officer's suspicions. And, by requiring a policeman conversing with a motorist constantly to monitor the information available to him to determine when it becomes sufficient to establish probable cause, the rule proposed by respondent would be extremely difficult to administer. Accordingly, we confine our attention below to respondent's stronger argument: that all traffic stops are subject to the dictates ofMiranda. ↩
  24. Page 435 It might be argued that, insofar as the Court of Appeals expressly held inadmissible only the statements made by respondent after his formal arrest, and respondent has not filed a cross-petition, respondent is disentitled at this juncture to assert thatMirandawarnings must be given to a detained motorist who has not been arrested. See,e. g., United Statesv.Reliable Transfer Co.,421 U.S. 397,401, n. 2 (1975). However, three considerations, in combination, prompt us to consider the question highlighted by respondent. First, as indicated above, the Court of Appeals' judgment regarding the time at whichMirandabecame applicable is ambiguous; some of the court's statements cast doubt upon the admissibility Page 436 of respondent's prearrest statements. Seesupra, at 425-426. Without undue strain, the position taken by respondent before this Court thus might be characterized as an argument in support of the judgment below, which respondent is entitled to make. Second, the relevance ofMirandato the questioning of a motorist detained pursuant to a traffic stop is an issue that plainly warrants our attention, and with regard to which the lower courts are in need of guidance. Third and perhaps most importantly, both parties have briefed and argued the question. Under these circumstances, we decline to interpret and apply strictly the rule that we will not address an argument advanced by a respondent that would enlarge his rights under a judgment, unless he has filed a cross-petition for certiorari. ↩
  25. Page 436 Examples of similar provisions in other States are: Ariz. Rev. Stat. Ann. §§28-622,28-622.01(1976 and Supp. 1983-1984); Cal. Veh. Code Ann. §§ 2800, 2800.1 (West Supp. 1984); Del. Code Ann., Tit. 21, § 4103 (1979); Fla. Stat. §316.1935(Supp. 1984); Ill. Rev. Stat., ch. 95 1/2 ¶ 11-204 (1983); N.Y. Veh. Traf. Law § 1102 (McKinney Supp. 1983-1984); Nev. Rev. Stat. §484.348(1) (1983); 75 Pa. Cons. Stat. § 3733(a) (1977); Wash. Rev. Code §46.61.020(1983). ↩
  26. Page 436 Indeed, petitioner frankly admits that "[n]o reasonable person would feel that he was free to ignore the visible and audible signal of a traffic safety enforcement officer . . . . Moreover, it is nothing short of sophistic to state that a motorist ordered by a police officer to step out of his vehicle would reasonabl[y] or prudently believe that he was at liberty to ignore that command." Brief for Petitioner 16-17. ↩
  27. Page 437 State laws governing when a motorist detained pursuant to a traffic stop may or must be issued a citation instead of taken into custody vary significantly, see Y. Kamisar, W. LaFave, J. Israel, Modern Criminal Procedure 402, n. a (5th ed. 1980), but no State requires that a detained motorist be arrested unless he is accused of a specified serious crime, refuses to promise to appear in court, or demands to be taken before a magistrate. For a representative sample of these provisions, see Ariz. Rev. Stat. Ann. §§ 28-1053, 28-1054 (1976); Ga. Code Ann. §40-13-53(Supp. 1983); Kan. Stat. Ann. §§8-2105,8-2106(1982); Nev. Rev. Stat. §§484.793,484.795,484.797,484.799,484.805(1983); Ore. Rev. Stat. §484.353(1983); S.D. Codified Laws §32-33-2(Supp. 1983); Tex. Rev. Civ. Stat. Ann., Art.6701d, §§ 147, 148 (Vernon 1977); Va. Code Page 438 § 46.1-178 (Supp. 1983). Cf. National Committed on Uniform Traffic Laws and Ordinances, Uniform Vehicle Code and Model Traffic Ordinance §§ 16-203 — 16-206 (Supp. 1979) (advocating mandatory release on citation of all drivers except those charged with specified offenses, those who fail to furnish satisfactory self-identification, and those as to whom the officer has "reasonable and probable grounds to believe . . . will disregard a written promise to appear in court"). ↩
  28. Page 438 The brevity and spontaneity of an ordinary traffic stop also reduces the danger that the driver through subterfuge will be made to incriminate himself. One of the investigative techniques thatMirandawas designed to guard against was the use by police of various kinds of trickery — such as "Mutt and Jeff" routines — to elicit confessions from suspects. See384 U.S., at 448-455. A police officer who stops a suspect on the highway has little chance to develop or implement a plan of this sort. Cf. LaFave, "Street Encounters" and the Constitution:Terry, Sibron, Peters, and Beyond, 67 Mich. L. Rev. 39, 99 (1968). ↩
  29. Page 439 SeeOrozcov.Texas,394 U.S. 324,325(1969) (suspect arrested and questioned in his bedroom by four police officers);Mathisv.United States,391 U.S. 1,2-3(1968) (defendant questioned by a Government agent while in jail). ↩
  30. Page 439 No more is implied by this analogy than that most traffic stops resemble, in duration and atmosphere, the kind of brief detention authorized inTerry. We of course do not suggest that a traffic stop supported by probable cause may not exceed the bounds set by the Fourth Amendment on the scope of aTerrystop. ↩
  31. Page 439 Nothing in this opinion is intended to refine the constraints imposed by the Fourth Amendment on the duration of such detentions. Cf.Sharpev.United States,712 F.2d 65(CA4 1983), cert. granted,467 U.S. 1250(1984). ↩
  32. Page 439 Cf.Adamsv.Williams,407 U.S. 143,148(1972). ↩
  33. Page 440 Cf.Terryv.Ohio,392 U.S., at 34(WHITE, J., concurring). ↩
  34. Page 441 Contrast the minor burdens on law enforcement and significant protection of citizens' rights effected by our holding thatMirandagoverns custodial interrogation of persons accused of misdemeanor traffic offenses. Seesupra, at 432-434. ↩
  35. Page 441 Cf.Commonwealthv.Meyer,488 Pa., at 301,307,412 A.2d, at 518-519,522(driver who was detained for over one-half hour, part of the time in a patrol car, held to have been in custody for the purposes ofMirandaby the time he was questioned concerning the circumstances of an accident). ↩
  36. Page 442 Cf.Beckwithv.United States,425 U.S. 341,346-347(1976) ("`It was the compulsive aspect of custodial interrogation, and not the strength or content of the government's suspicions at the time the questioning was conducted, which led the Court to impose theMirandarequirements with regard to custodial questioning'") (quotingUnited Statesv.Caiello,420 F.2d 471,473(CA2 1969));Peoplev.P.,21 N.Y.2d 1,9-10,233 N.E.2d 255,260(1967) (an objective, reasonable-man test is appropriate because, unlike a subjective test, it "is not solely dependent either on the self-serving declarations of the police officers or the defendant nor does it place upon the police the burden of anticipating the frailties or idiosyncrasies of every person whom they question"). ↩
  37. Page 442 Cf.United Statesv.Schultz,442 F. Supp., at 180(suspect who was stopped for erratic driving, subjected to persistent questioning in the Page 443 squad car about drinking alcohol and smoking marihuana, and denied permission to contact his mother held to have been in custody for the purposes ofMirandaby the time he confessed to possession of a sawed-off shotgun). ↩
  38. Page 443 Judge Wellford, dissenting in the Court of Appeals, did address the issue of harmless error, see n. 6,supra, but without the benefit of briefing by the parties. The majority of the panel of the Court of Appeals did not consider the question. ↩
  39. Page 443 Nor did petitioner mention harmless error in his petition to this Court. Absent unusual circumstances, cf. n. 23,supra, we are chary of considering issues not presented in petitions for certiorari. See this Court's Rule 21.1(a) ("Only the questions set forth in the petition or fairly included therein will be considered by the Court"). ↩
  40. Page 444 This case is thus not comparable toMiltonv.Wainwright,407 U.S. 371(1972), in which a confession presumed to be inadmissible contained no information not already provided by three admissible confessions. Seeid., at 375-376. ↩
  41. Page 444 Because we do not rule that the trial court's error was harmless, we need not decide whether harmless-error analysis is even applicable to a case of this sort. ↩
  42. Page 444 Under Ohio law, respondent had a right to pursue such a course. See n. 2,supra. ↩
  43. Page 444 Indeed, respondent points out that he told Trooper Williams of these ailments at the time of his arrest, and their existence was duly noted in the Alcohol Influence Report. See App. 2. ↩