Under the Carroll Doctrine, warrantless vehicle searches are permissible when which condition exists?

• A. Probable cause exists
• B. There is consent
• C. There is exigent circumstances
• D. The vehicle is unattended

Answer: (A)

The key idea is the automobile exception: a vehicle can be searched without a warrant if there is probable cause to believe it contains evidence or contraband. Probable cause means there are facts and circumstances that would lead a reasonable person to believe something illegal is inside the vehicle. Because cars can move quickly and the evidence could disappear, police are allowed to search the vehicle and its compartments without a warrant when that probable cause exists.

Consent is a separate way to justify a warrantless search, and exigent circumstances can also excuse a warrant in some cases, but the Carroll Doctrine specifically centers on probable cause. Merely leaving the vehicle unattended by itself does not justify a warrantless search.