When may a vehicle be searched without a warrant?

• A. With consent, probable cause, or exigent circumstances, or after a lawful arrest of an occupant under specific conditions.
• B. Only with a warrant.
• C. Only if the vehicle is in plain view.
• D. If the occupant is a suspect in a different crime.

Answer: (A)

A vehicle can be searched without a warrant when a recognized exception to the Fourth Amendment applies. The main idea is that vehicles, because they can move and evidence can be easily transported or destroyed, are allowed to be searched under practical, lawful reasons rather than only with a warrant.

First, consent. If someone with authority voluntarily agrees to a search, no warrant is needed. Second, probable cause. If police have probable cause to believe the vehicle contains evidence or contraband, they may conduct a search under the vehicle exception (often called the Carroll doctrine) even without a warrant. Third, exigent circumstances. If there’s an urgent situation—such as a risk of destruction of evidence, imminent danger to someone, or a hot pursuit—police may search without a warrant. Fourth, after a lawful arrest of an occupant. The arrestee may be searched, and the vehicle may be searched under limited, specific conditions (for example, where the arrestee is unsecured and within reach of the vehicle, or where there is probable cause to believe the vehicle holds evidence related to the offense).

The other options aren’t correct because plain view doesn’t authorize a broad search of the vehicle by itself, and simply having an occupant be a suspect in a different crime doesn’t automatically justify a vehicle search without one of the valid exceptions above.