Knowles v. Iowa, 525 U.S. 113, 6 (1998)

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118

KNOWLES v. IOWA

Opinion of the Court

may order out of a vehicle both the driver, Mimms, supra, at 111, and any passengers, Wilson, supra, at 414; perform a "patdown" of a driver and any passengers upon reasonable suspicion that they may be armed and dangerous, Terry v. Ohio, 392 U. S. 1 (1968); conduct a "Terry patdown" of the passenger compartment of a vehicle upon reasonable suspicion that an occupant is dangerous and may gain immediate control of a weapon, Michigan v. Long, 463 U. S. 1032, 1049 (1983); and even conduct a full search of the passenger compartment, including any containers therein, pursuant to a custodial arrest, New York v. Belton, 453 U. S. 454, 460 (1981).

Nor has Iowa shown the second justification for the authority to search incident to arrest—the need to discover and preserve evidence. Once Knowles was stopped for speeding and issued a citation, all the evidence necessary to prosecute that offense had been obtained. No further evidence of excessive speed was going to be found either on the person of the offender or in the passenger compartment of the car.

Iowa nevertheless argues that a "search incident to citation" is justified because a suspect who is subject to a routine traffic stop may attempt to hide or destroy evidence related to his identity (e. g., a driver's license or vehicle registration), or destroy evidence of another, as yet undetected crime. As for the destruction of evidence relating to identity, if a police officer is not satisfied with the identification furnished by the driver, this may be a basis for arresting him rather than merely issuing a citation. As for destroying evidence of other crimes, the possibility that an officer would stumble onto evidence wholly unrelated to the speeding offense seems remote.

In Robinson, we held that the authority to conduct a full field search as incident to an arrest was a "bright-line rule," which was based on the concern for officer safety and destruction or loss of evidence, but which did not depend in every case upon the existence of either concern. Here we

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