Automobile Exception
What does "Automobile Exception" mean in law?
The automobile exception, originating in Carroll v. United States (1925), permits law enforcement to search a motor vehicle without a warrant if there is probable cause to believe the vehicle contains contraband or evidence of a crime. The rationale rests on two grounds: the inherent mobility of vehicles creates exigent circumstances (the car could be driven away before a warrant is obtained), and the reduced expectation of privacy in automobiles due to pervasive government regulation. Under United States v. Ross (1982), if probable cause justifies the search of the vehicle, it extends to every part of the vehicle and any containers within it that might conceal the object of the search. Unlike a search incident to arrest, the automobile exception requires probable cause but does not require an arrest.
Definition
The automobile exception, originating in Carroll v. United States (1925), permits law enforcement to search a motor vehicle without a warrant if there is probable cause to believe the vehicle contains contraband or evidence of a crime. The rationale rests on two grounds: the inherent mobility of vehicles creates exigent circumstances (the car could be driven away before a warrant is obtained), and the reduced expectation of privacy in automobiles due to pervasive government regulation. Under United States v. Ross (1982), if probable cause justifies the search of the vehicle, it extends to every part of the vehicle and any containers within it that might conceal the object of the search. Unlike a search incident to arrest, the automobile exception requires probable cause but does not require an arrest.
Example
When a drug-sniffing dog alerted on the trunk of a car during a lawful traffic stop, officers had probable cause to search the entire vehicle, including a locked suitcase in the trunk, without obtaining a warrant.