The Carroll Doctrine allows searches that are as extensive as possible with which instrument?

• A. A search warrant
• B. A court order
• C. A subpoena
• D. A warrantless agreement

Answer: (A)

The key idea here is the automobile exception to the Fourth Amendment. Cars are mobile and people have a lesser expectation of privacy in them, so police can search a vehicle without a warrant if there’s probable cause to believe it contains evidence. When you’re talking about allowing a search to go as far as possible, a formal search warrant provides the clearest authorization for the broadest reach within the vehicle, specifying what can be looked at and where. So, in the context of maximizing the areas that can be searched, the instrument that best fits is a search warrant.