Opinion for the court filed by Circuit Judge HENDERSON.
Sterling Mapp (Mapp) was indicted on one charge of possessing with intent to distribute more than one hundred grams of phencyclidine (PCP) in violation of 21 U.S.C. § 841(a)(1) and (b)(1)(B). Mapp moved to suppress evidence, arguing that the arresting officers’ search of his vehicle^ — and discovery of PCP — was not conducted “incident to a lawful arrest” and therefore excepted from the Fourth Amendment’s warrant requirement under
Thornton v. United States,
I.
On September 6, 2004, United States Park Police Officer James Dowd (Dowd) was in his patrol car in the left-turn lane northbound on Martin Luther King Avenue in southeast Washington, D.C. Although the traffic signal showed “a green arrow allowing the left traffic lane to turn left,” the Cadillac in front of Dowd — the first car in the turning lane — did not turn left. 5/2/05 Tr. 11. Instead, the Cadillac allowed “the left-turn green arrow [to] ex-piren” and “southbound traffic began to move southbound through the intersection.” Id. At that point, the Cadillac quickly turned left without yielding to southbound traffic, see id., and caused southbound “cars to slam on their brakes.” Factual Proffer in Support of Guilty Plea (Factual Proffer), reprinted in Mapp Appendix (App.) at 46. After witnessing this maneuver, Dowd followed the Cadillac onto Malcolm X Avenue and radioed the Park Police station for a registration check.
Before receiving a response to his inquiry, Dowd observed the Cadillac quickly pull to a stop on the right side of the street. Dowd responded by pulling his car alongside the Cadillac as its driver— Mapp — began to exit the vehicle and Dowd “informed the driver that he committed a traffic violation” at the last intersection. 5/2/05 Tr. 13. At the same time, a woman — later identified as Keisha Napper (Napper) — exited the passenger side of the Cadillac. Dowd reversed his police cruiser in order to park directly behind the Cadillac, “basically ... like a normal traffic stop.” Id. at 14. As Dowd parked, Mapp began walking toward him. Getting out of the cruiser, Dowd asked Mapp for his license and registration and Mapp, continuing to approach Dowd, began feeling around his clothing as if searching for his license. At this point, Dowd noticed Napper walking away from the Cadillac with “a bunch of kids.” Id. at 16.
As Mapp approached him, Dowd instructed Mapp to stop reaching around and, when Mapp nonetheless continued to do so, Dowd became “a little nervous” and ordered Mapp to place his hands on the cruiser’s hood. Id. at 14. Finally, Mapp responded that he did not have a driver’s license and Dowd placed him under arrest for failure to display a permit, a violation of D.C. Mun. Regs. tit. 18 §§ 100.2 and 421.1. After arresting Mapp, Dowd placed him in the back seat of the cruiser and asked Mapp for his car keys, intending to “do a search incident to arrest.” Id. at 18. Mapp responded that Napper had taken the keys. Id. at 17. About this time, Napper returned, explaining that “she had put the keys with her kids.” Id. Two other Park Police officers who had responded to the scene went with Napper to retrieve the keys. The officers returned with Napper within “approximately five minutes,” id. at 34, but without the keys because Napper told them that “she forgot where she put her kids,” id. at 17. Ulti *1015 mately, the police discovered that the rear passenger’s side door was unlocked and began searching the vehicle.
Dowd opened the front passenger door and “immediately [noticed] a black plastic bag ... [on] the center console” between the driver’s and passenger’s seats. Id. at 19. Inside the bag Dowd observed eight bottles containing a brownish-yellow liquid that he suspected — from past experience— to contain PCP. See 9/9/04 Tr. 9. Knowing PCP “to be somewhat dangerous,” Dowd asked Napper what was in the bottles and Napper responded, “I think it’s drugs.” Id. at 10-11. Thus, “[b]etween the color [of the liquid], the way they were packaged, and her statements, [Dowd] was fairly certain that [he] was dealing with PCP.” Id. at ll. 1 At that point, he arrested Mapp and Napper for possessing PCP with intent to distribute and transported them to a Park Police station. 2
On October 7, 2004, a grand jury charged Mapp on one count of possessing with intent to distribute one hundred grams or more of PCP in violation of 21 U.S.C. § 841(a)(1) and (b)(1)(B). Mapp subsequently moved to suppress the PCP recovered from his car “as the fruit of an illegal seizure and search.” Mot. to Suppress Physical Evid. and Statements (Mot. to Suppress),
reprinted in
App. at 22. Mapp argued that the circumstances of his arrest neither posed a threat of evidence destruction nor endangered the safety of the arresting officers because “Mapp was handcuffed and under police control
before
the search took place.” App. at 26 (emphasis in original). Relying on language contained in a concurring opinion in
Thornton,
II.
The Fourth Amendment to the United States Constitution prohibits police
*1016
from “conducting] a search unless they first convince a neutral magistrate that there is probable cause to do so” and obtain a warrant.
New York v. Belton,
A.
“To have been lawful, the arrest must have been based upon probable cause to believe that a crime was being committed.”
Wesley,
Mapp first argues that “the alleged D.C. traffic infraction ... was not supported by probable cause” because “Officer Dowd was able to make the left hand turn behind [him]” onto Malcolm X Avenue. Appellant’s Br. at 47, 46.
4
The record, however, indicates that Dowd had probable cause to arrest Mapp for failure to yield. Dowd observed Mapp making an abrupt turn after the green turn signal had expired, causing oncoming traffic to “slam on their brakes,” Factual Proffer at App. 46, in order to avoid an accident. 5/2/05 Tr. 10-12. That maneuver provided Dowd with probable cause to believe that a traffic violation — failure to yield — had occurred,
see
D.C. Mun. Regs. tit. 18 § 2208.2,
5
and thus to arrest Mapp,
see Atwater,
B.
“It is well settled that a search incident to a lawful arrest is a traditional exception to the warrant requirement of the Fourth Amendment.”
Robinson,
When an arrest is made, it is reasonable for the arresting officer to search the person arrested in order to remove any weapons that the latter might seek to use in order to resist arrest or effect his escape. Otherwise, the officer’s safety might well be endangered .... In addition, it is entirely reasonable for the arresting officer to search for and seize any evidence on the arrestee’s person in order to prevent its concealment or destruction. And the area into which an arrestee might reach in order to grab a weapon or evidentiary items must, of course, be governed by a like rule.
Id. Thus, a search incident to a lawful arrest includes both the arrestee and his immediate surroundings and is justified by the twin rationales of officer safety and preservation of evidence.
The Court clarified the scope of the exception in
Robinson,
Believing a “familiar standard is essential to guide police officers, who have only limited time and expertise to reflect on and balance the ... interests involved in the specific circumstances they confront,”
Belton,
In
Thornton,
the Supreme Court declared another bright-line rule governing the scope of a search incident to arrest. In that case, the defendant exited his vehicle before the police made contact with him, presenting the issue “whether
Bel-ton’s
rule is limited to situations where the officer makes contact with the occupant while the occupant is inside the vehicle.”
A custodial arrest is fluid and ‘[t]he danger to the police officer flows from the fact of the arrest, and its attendant proximity, stress, and uncertainty.’ The stress is no less merely because the arrestee exited his car before the officer initiated contact, nor is an arrestee less likely to attempt to lunge for a weapon or to destroy evidence if he is outside of ... the vehicle. In either case, the officer faces a highly volatile situation. It would make little sense to apply two different rules to what is, at bottom, the same situation.
Id.
(quoting
Robinson,
Moreover, the Court continued to stress the need for a bright-line rule “readily understood by police officers and not depending on differing estimates of what items were or were not within reach of an arrestee at any particular moment.”
Id.
at 622-23,
According to the record, Dowd’s first contact with Mapp occurred as Mapp exited his vehicle, 5/2/05 Tr. at 13-14; Dowd then arrested Mapp at the hood of Dowd’s police cruiser,
id.
at 14-15, which was parked behind Mapp’s vehicle,
id.
at 14. Thus, Mapp was close enough to his car to justify the search.
See Michigan v. Long,
For the foregoing reasons, we affirm the district court’s denial of Mapp’s motion to suppress.
So ordered.
Notes
. The Drug Enforcement Administration (DEA) subsequently tested the contents of the bottles and confirmed that they consisted of 107.8 grams of PCP. See Factual Proffer at App. 46.
. At the station, Mapp was also given two traffic citations, one for failure to yield and another for failure to display a "permit.” See 5/2/05 Tr. 16.
. The district court rejected Mapp’s proposed rule by noting that "when a person cannot produce a driver's license and registration for the vehicle, ... it is appropriate for [arresting officers] to search [the car] to find out whose vehicle it is,” 5/2/05 Tr. 69, and thus Dowd had reason to believe the car contained evidence — such as the vehicle registration — relevant to the crime of arrest, Mapp's failure to present a license or registration, see id. at 68-70. The district court also emphasized the "very suspicious” circumstances of Mapp’s actions, id. at 90, suggesting that Dowd had reason to suspect either destructible evidence or weapons were in the vehicle given Napper's removal of the keys, see id. at 96-97. The district court also suggested that when Mapp exited his car and began walking toward Dowd, Dowd “would have a reason to believe [Mapp] was seeking to try to separate himself from the vehicle for some reason.” Id. at 91.
. The Government contends that Mapp waived his probable cause argument "because it was not presented to the district court.” Appellee's Br. at 31. Although Mapp focused below on the proper scope of a search incident to arrest under
Thornton, see
Mot. to Suppress at App. 24-26; 5/2/05 Tr. 67-95, his motion asserted that "there was no probable cause to support [Mapp's] arrest.” Mot. to Suppress at App. 24. At the suppression hearing, Mapp elicited testimony regarding. Dowd's ability to follow Mapp through the intersection,
see
5/2/05 Tr. 27, laying the foundation for his argument that, because "Officer Dowd was able to make the left hand turn behind [Mapp] in the ordinary course, ... then [Mapp's] actions in turning the car had not created 'an immediate hazard.’ ” Appellant's Br. at 46. This is sufficient for us to conclude Mapp did not waive his probable cause argument.
Cf. United States v. Redman,
. Dowd learned of a second traffic violation supporting Mapp's arrest, namely failure to show a driver’s license, see 5/2/05 Tr. 16, after he stopped Mapp.
. Mapp also appears to question Dowd's subjective motivation in initiating a traffic stop, describing "the manifestly spurious nature of the alleged traffic violation.” Appellant’s Br. at 44;
see also id.
at 47 (citing
United States v. Buttock,
. This time estimate comes from Dowd's description of Napper’s movements. First, Dowd noticed Napper leaving the scene with her children as Mapp approached him (before Mapp's arrest). 5/2/05 Tr. 16. Napper returned in "approximately five minutes” — after Mapp's arrest for failure to present a driver’s license.
Id.
at 32-33. At that point, Dowd asked Napper for the keys to Mapp’s car and she escorted two officers in a failed attempt to retrieve the keys, returning again in "approximately five minutes."
Id.
at 34. The police then discovered the unlocked door and began their search.
Id.
Moreover, Mapp's assertion that the search for the car keys was "an extraordinary ‘intervening event[],’ ” Appellant’s Br. at 41 (quoting
Abdul-Saboor,
