OPINION
Defendant Harvey Everett III was convicted of being a felon in possession of a firearm after he volunteered during a traffic stop, in response to the detaining officer’s questioning, that he had a shotgun in his car. He appeals his conviction, arguing that the shotgun should have been suppressed because the officer’s questioning on a subject unrelated to his traffic offense violated the Fourth Amendment. This case presents us with an issue of first impression in this circuit: under
Muehler v. Mena,
I
Even before he was arrested, April 15, 2008 was shaping up to be a bad day for Mr. Everett. That evening, he had helped his estranged wife (with whom he was in the process of obtaining a divorce) move into a new house. At her insistence, Everett had retrieved some of the possessions that he had been storing with her, including a shotgun. By the time he had finished, it was approximately 8:30 p.m. This being tax day, however, Everett needed to get to the office of Advance Financial, a tax-preparation company, before closing time — which he believed to be 9:00 p.m.— in order to seek help filing for an extension.
A few minutes before 9:00, Detective Morgan Ford, sitting in her patrol car on a Nashville thoroughfare, saw Everett drive by at a high rate of speed. 1 Ford was a member of the Nashville Police Department’s “Flex Team,” which she described as “an aggressive patrol unit designed to make traffic stops and Terry stops in high-crime areas to reduce crime.” In other words, as Everett characterizes it, Ford was planning to make “pretext[ual]” traffic stops “-with the real purpose of trying to ferret out other types of crime.”
Ford followed Everett to the Advance Financial office. As Everett parked, she pulled uр next to him with her lights on and approached his vehicle. At that point, if not before, Ford would have seen that Everett was a middle-aged African-American male. She asked Everett (who was still in his car) for his license, registration, and proof of insurance. Everett admitted that his license was suspended, but produced alternate identification and proof that he was in the process of paying off the required fines to get his license back. At that point, Ford “started smelling ... alcohol” on Everett’s breath. 2
*487 Ford then asked Everett to step out of the vehicle, and he readily complied. Ford did not immediately continue with what she testified was standard traffic-stop procedure — i.e., checking for registration and proof of insurance. Nor did she directly proceed to write Everett a speeding ticket. Instead, Ford at once asked him “if he had anything illegal on his person, any weapons or narcotics or anything like that, or anything illegal in his vehicle.” As the government concedes, Ford had no particularized basis to suspect that Everett possessed any weapons, drugs, or other contraband — although she testified that, in her experience, it was “very common ... for people to have firearms in [their] vehicle after they have been drinking.” 3
Everett responded that he “had an open forty-ounce beer and a .410 shotgun, which ... he knew he was not supposed to have because he was a convicted felon.” Ford asked what his conviction was for, and he answered “drugs.” Ford then asked if Everett had “any other weapons or anything else on his person she needed to know about.” He said he did not. Ford asked if she could check; Everett agreed. Upon conducting a pat-down, she found two baggies of marijuana in his jacket pocket.
Ford handcuffed Everett, Mirandized him, and placed him in her squad car. She then searched Everett’s vehicle, where she found the .410 shotgun, which was unloaded and wrapped in a black trash bag, on the floorboard of the back seat. She also found the open forty-ounce beer, as well as a set of digital scales with white powder residue, which field-tested positive for crack cocaine. Because Everett had been so cooperative, Ford decided to “cut [him] a break” on the firearm charge and issued him misdemeanor citations for simple possession of marijuana, possession of drug paraphernalia, and driving on a revoked license. She also issued a traffic citation for careless driving. At that point, Ford released Everett from custody.
Notwithstanding Ford’s lenience, the government filed a federal complaint against Everett and, in May 2008, he was indicted on one count of possessing a firearm as a felon, in violation of 18 U.S.C. § 922(g). Everett moved to suppress the evidence and the statements obtained during the traffic stop. On July 14, 2008, the district court initially granted the motion, ruling that, in the absence of independent reasonable suspicion, Ford’s questions on matters unrelated to the traffic stop rendered the stop unreasonable under the Fourth Amendment and that the shotgun was therefore “fruit of the poisonous tree.” The government filed a motion for reconsideration, and on August 29, 2008, the district court vacated its prior order and denied Everett’s suppression motion. Everett entered a conditional guilty plea, reserving the suppression issue for appeal. On January 8, 2009, the district court sentenced Everett to 36 months in prison.
II
“When reviewing a district court’s decision on a motion to suppress, we use a mixed standard of review: we review findings of fact for clear error and conclusions of law de novo.”
United
*488
States v. See,
III
Everett does not argue' — nor could he — that the traffic stop was invalid at its outset. Even if Ford’s decision to stop him for a traffic violation was a pretext to fish for evidence of other crimes, as the record suggests was the case, “the constitutional reasonableness of traffic stops [under the Fourth Amendment does not] dependf ] on the actual motivations of the individual officers involved.”
Whren v. United States,
IV
Of course, “a seizure that is lawful at its inception can violate the Fourth Amendment if its manner of execution unreasonably infringes interests protected by the Constitution.”
Illinois v. Caballes,
To qualify as reasonable seizures under the Fourth Amendment,
Teiry
detentions must be “limited in [both] scope and duration.”
Florida v. Royer,
In this case, the district court initially concluded that Ford violated Terry’s scope prong by inquiring about weapons or narcotics in the absence of independent reasonable suspicion of a
firearm
or
drug
offense. At first blush, this conclusion has some appeal: arguably, questions about weapons or drugs are not “reasonably related ... to the circumstances which justified the [traffic stop] in the first place,”
Sharpe,
We never joined those circuits in categorically restricting the topic of officers’ questions during traffic stops. In fact, in one case, we held that an officer did not violate
Terry
by asking “a few” off-topic questions during a traffic stop, including “whether there was anything illegal inside [the automobile],” in the absenсe of any reasonable suspicion of illegal activity beyond the traffic violation.
See United States v. Burton,
This circuit split was resolved in
Muehler v. Mena,
[The appellate court’s] holding, it appears, was premised on the assumption that the officers were required to have independent reasonable suspicion in order to question Mena concerning her immigration status because the questioning constituted a discrete Fourth Amendment event. But the premise is faulty. We have “held repeatedly that mere police questioning does not constitute a seizure.” Florida v. Bostick,501 U.S. 429 , 434,111 S.Ct. 2382 ,115 L.Ed.2d 389 (1991); see also INS v. Delgado,466 U.S. 210 , 212,104 S.Ct. 1758 ,80 L.Ed.2d 247 (1984). “[E]ven when officers have no basis for suspecting a pаrticular individual, they may generally ask questions of that individual----” Bostick, supra, at 434-435,501 U.S. 429 ,111 S.Ct. 2382 ,115 L.Ed.2d 389 (citations omitted). As the Court of Appeals did not hold that the detention ivas prolonged by the questioning, there was no additional seizure within the meaning of the Fourth Amendment. Hence, the officers did not need reasonable suspicion to ask Mena for her name, date and place of birth, or immigration status.... [T]he initial ... detention was lawful; the Court of Appeals did not find that the questioning extended the time Mena was detained. Thus no additional Fourth Amendment justification for inquiring about Mena’s immigration status was required.
Id.
at 100-01,
Muehler and Johnson are not absolutely on all fours with this case, however, as neither party disputes that Ford’s initial *491 question about “weapons or narcotics ... or anything illegal” in theory extended the stop by a few seconds. 7 Moreover, neither of those cases specifically addressed what the outcome would have been if the questioning at issue had prolonged the defendants’ respective seizures. Therefore, we must look to the reasoning underlying Muehler and Johnson, and to the animating principles of the Supreme Court’s Fourth Amendment case law as a whole, to determine whether the questioning that occurred here was permissible.
V
The first decision we must make is whether to construe
Muehler
and
Johnson
as establishing a bright-line “no prolongation” rule, under which
any
extension of a traffic stop due to suspicionless extraneous questioning — no matter how brief — is per se unreasonable. Such a rule would not be without some textual basis: the
Johnson
Court stated that unrelated questions are permissible “so long as those inquiries do not
measurably
extend the duration of the stop.”
Nevertheless, the overwhelming weight of authority militates against a bright-line “no prolongation” rule. First, with respect to the relevant passage from
Johnson,
we note that another definition of the word “measurable” is “significant” or “great enough to be worth consideration.” Webster’s Third New International Dictionary Unabridged (1981) at 1399.
8
Only this definition is consistent with Johnson’s reliance on
Muehler,
which in turn relied on
Illinois v. Caballes;
in
Caballes,
the Court had held that “a dog sniff performed during a traffic stop does not violate the Fourth Amendment ... [if the dog sniff does not cause the stop to be] ‘prоlonged
beyond the time reasonably required
to complete [the] mission [of issuing a warning ticket].’”
Muehler,
More broadly, the Supreme Court has repeatedly emphasized, across a variety of contexts, that “[t]he ultimate touchstone of the Fourth Amendment ... is ‘reasonableness.’”
Michigan v. Fisher,
— U.S. -,
We also note that each of our sister circuits to confront this question since
Muehler
has refused to adopt a bright-line “no prolongation” rule.
See United States v. Chaney,
Finally, we find it significant that Everett’s proposed no-prolongation rule would provide little actual protection against police abuses.
Muehler
and
Johnson
make clear (and Everett does not dispute) that an officer may ask unrelated questions to his heart’s content, provided he does so during the supposedly dead time while he or another officer is completing a task related to the traffic violation.
See also United States v. Bell,
Because the vast weight of authority is against a bright-line rule, and because such a rule would not even serve its intended purpose as a bulwark against pretextual police activity, we join our sister circuits in declining to construe Muehler and Johnson as imposing a categorical ban on suspicionless unrelated questioning that may minimally prolong a traffic stop. 9
*493 VI
Of course, this raises a second important question: if some prolongation is permissible under Muehler and Johnson, how much is too much? Once again, those decisions themselves are silent, and commentators have noted the difficulty in formulating a principled rule. See Wayne R. LaFave, The “Routine Traffic Stop” from Start to Finish: Too Much “Routine, ” Not Enough Fourth Amendment, 102 Mich. L.Rev. 1843, 1871 (2004) (“Once the rather clear Terry limit, tied to those activities defensible in terms of responding to the traffic infraction, is abandoned, there remains no other basis for making a judgment ... — unless it is simply a matter of applying the ‘horseshoes rule,’ i.e., that just being close counts.”); Orin S. Kerr, Officer Questioning in a Traffic Stop, The Volokh Conspiracy, Oct. 21, 2009, http:// volokh.com/2009/10/21/officer-questioningin-a-traffic-stop/ (“There aren’t a lot of easy answers here.... ”).
So far, our sister circuits have given their blessing to prolongations greater than the several seconds at issue here.
See Chaney,
Appx. at 36 (“We conclude ... that the five minutes of [unrelated] questioning did not signifiсantly extend the time Derverger was detained.”);
Oliverar-Mendez,
Rather, because the touchstone of any Fourth Amendment analysis is reasonableness, we must conduct a fact-bound, context-dependent inquiry in each case.
*494
Furthermore, we conclude that it would be inappropriate merely to evaluate the reasonableness of
the interval of prolongation
in isolation. Instead, the proper inquiry is whether the “totality of the circumstances surrounding the stop” indicates that the duration of
the stop as a whole
— including any prolongation due to suspicionless unrelated questioning — was reasonable.
Turvin,
The Supreme Court has provided some abstract guidance, noting that “[i]n assessing whether a [stop] is too long in duration ..., we consider it appropriate to examine whether the police diligently pursued a means of investigation that was likely to confirm or dispel their suspicions quickly....”
Sharpe,
Importantly, in evaluating whether an officer’s prolongation of a traffic stop through extraneous questions indicates a lack of diligence, the
subject
of those questions, no less than their quantity, is part of the “totality of the circumstances” of the stop, and is therefore a relevant consideration. That is to say, some questions are “farfther] afield” than others.
Chhien,
Additionally, the Supreme Court has emphasized that “the safety of the officer” during a traffic stop is a “legiti
*495
mate and weighty” interest,
Pennsylvania v. Mimms,
At other times, however, an officer’s questions will be relevant only to ferreting out unrelated criminal conduct. Because the reasonable diligence standard does not “requirefan officer] to move at top speed,”
Turvin,
Judged by this standard, this case is not remotely close. First of all, Ford’s question specifically raised the subject of “weapons,” which is reasonably related to the “legitimаte and weighty” consideration of officer safety.
Mimms,
And, while Ford also mentioned “narcotics” and other “illegal” items — which are less directly related to officer safety — the additional delay caused by the insertion of several extra words, under the totality of the circumstances, does not signify a lack of diligence. We emphasize that Ford asked only a single question before Everett confessed to possessing an illegal gun and an open container of alcohol, giving her probable cause to arrest him and search the car. It cannot be said that this single question, in the situation Ford confronted, constituted a definitive abandonment of the prosecution of the traffic stop in favor of a sustained investigation into drug or firearm offenses. 13 Nor did this single question, taking up several seconds, constitute the bulk of the interaction be *496 tween Ford and Everett. 14 Accordingly, Ford’s questioning did not render the traffic stop an unreasonable seizure under the Fourth Amendment.
VII
In concluding, we caution that the rule of
Muehler
and
Johnson
— i.e., that extraneous questions are a Fourth Amendment nullity in the absence of prolongation — is prеmised upon the assumption that the motorist’s responses are voluntary and not coerced. For its proposition that “mere police questioning” does not trigger the Fourth Amendment,
Muehler
quoted and relied on
Florida v. Bostick,
Since Terry, we have held repeatedly that mere police questioning does not constitute a seizure. In Florida v. Royer,460 U.S. 491 ,103 S.Ct. 1319 ,75 L.Ed.2d 229 (1983) (plurality opinion), for example, we explained that “law enforcement officers do not violate the Fourth Amendment by merely approaching an individual on the street or in another public place, by asking him if he is willing to answer some questions, by putting questions to him if the person is willing to listen, or by offering in evidence in a criminal prosecution his voluntary answers to such questions.”
We have stated that even when officers have no basis for suspecting a particular individual, they may generally ask questions of that individual ... — as long as the police do not convey a message that compliance with their requests is required.
Bostick,
The Court that decided
Muehler
and
Johnson
clearly believed that questioning during a traffic stop is not
ipso facto
coercive under
Royer
and
Bostick. But see Berkemer v. McCarty,
As there were no allegations of especially heavy-handed police conduct in this case, however, we leave for another day the question of when suspicionless extrane *497 ous questioning during a traffic stop crosses the line from consensual into coercive.
VIII
For the reasons described above, we AFFIRM the district court’s denial of Everett’s suppression motion.
Notes
. Everett concedes that he was driving five to ten miles per hour over the speed limit.
. Everett admits having drunk a beer or half a beer earlier in the evening. He does not dispute that Ford was able to detect the odor of alcohol.
. Although the district court found that Ford had not performed a field sobriety test, it concluded — and the parties do not dispute— that Ford “quickly reached the conclusion that Mr. Everett was not intoxicated.” The district court did nоt state whether Ford reached this conclusion before or after asking Everett the question about contraband. However, given that Ford asked the question immediately after Everett exited his vehicle, we assume that she still suspected Everett might be intoxicated when she asked it. In any event, this assumption is by no means necessary to our disposition of this case.
. We note that the Supreme Court has never squarely held that the permissible scope of all traffic stops is governed by
Terry.
In
Berkemer v. McCarty,
. Of course, in most traffic stops — as opposed to most standard Terry stops — the officer will be quite certain that a traffic violation occurred at the outset, and will not need to "verify ... [his] suspicion” at all. The Sharpe formulation of the Terry scope test thus appears better suited to traffic stops than that in Royer.
. Muehler’s rationale that "only such conduct as itself constitutes a [separate] Fourth Amendment search [or seizure] can ... amount[] to a [Teny] scope violation” has been subjected to significant criticism. Wayne R. LaFave, Search and Seizure (4th ed.) § 9.3(b) (arguing that “the Supreme Court’s relevant prior decisions сonsistently point in the other direction”); see also Wayne R. LaFave, The "Routine Traffic Stop’’ from Start to Finish: Too Much “Routine," Not Enough Fourth Amendment, 102 Mich. L.Rev. 1843, 1887 (2004) (stating that the position which the Court would go on to adopt in Muehler is "dead wrong!”).
. We need be concerned only with the propriety of Ford's initial question. Assuming her initial question was proper, Everett's response to this question — that he “had an open forty-ounce beer and a .410 shotgun, which ... he knew he was not supposed to have because he was a convicted felon” — gave Ford separate grounds to search and/or arrest him for driving with an open container of alcohol,
see
Tenn.Code Ann. § 55 — 10— 416(a)(1), or for a firearm violation. Thus, the length of time expended through further questioning was irrelevant. On the other hand, if the prolongation caused by her initial question violated the Fourth Amendment, all that followed was suppressible as “fruit of the poisonous tree.”
See Wong Sun v. United States,
. In fact, as the immediate etymological antecedent of the adjective “measurable” and adverb "measurably,” Webster’s gives the Middle English measurable, meaning “moderate.” Webster's Third New International Dictionary Unabridged (1981) at 1399.
. Everett argues that we have effectively already adopted a bright-line "no prolongation” rule in
United States v. Urrieta,
Under the Fourth Amendment, even the briefest of detentions is too long if the police lack a reasonable suspicion of specific criminal activity. In other words, law enforcement does not get a free pass to extend a lawful detention into an unlawful one simply because the unlawful extension was brief.
Id. at 578-79 (internal citation omitted). However, Urrieta's analysis was limited to scenarios in which a traffic stop had already come to a logical conclusion at the time of the offending questioning, such that the extension of the stop constituted a new, independent seizure requiring reasonable suspicion. See id. at 578 ("[E]ven the briefest of detentions [without reasonable suspicion] is too long .... "(emphasis added)). Here, by contrast, the questioning at issue occurred well before the purpose of the stop was completed. Thus, in this case, the original detention (and the original probable cause that supported it) was still alive. Accordingly, Urrieta’s holding that "even the briefest of detentions” requires at least reasonable suspicion has no application here.
.
Muehler
and
Johnson
do not establish that the subject of an officer's questioning is irrelevant to the
Terry
analysis altоgether. Those cases stand for the proposition that mere questioning — on any subject — cannot violate the
scope
prong of
Terry.
Therefore, where
Terry's
duration prong is not at issue, as in
Muehler and Johnson,
the subject of the questioning will indeed be irrelevant.
See Alcaraz-Arellano,
. Indeed, since the Court held in
Mimms
that safety considerations justify officers ordering motorists out of their vehicles during traffic stops as a matter of course, it would be irrational to conclude that оfficers cannot take the "less intrusive [measure]” of "simply [asking] whether a driver has a gun.”
May,
. Importantly, it is the objective conduct of the officer which the diligence standard measures; his subjective intent or hope to uncover unrelated criminal conduct is irrelevant.
See Whren,
. As it happens, the question did, in fact, result in a sustained investigation into other offenses, once Everett immediately confessed to possessing contraband, giving rise to probable cause. Ford, however, cannot be faulted for this fortuitous outcome.
. Of course, where, as here, the allegedly offending questioning occurs at the beginning of a traffic stop and immediately results in an incriminating statement, the portion of the total interaction taken up by the questioning is less meaningful.
