Yes. You can refuse consent to a search of your car after a Rhode Island traffic stop unless the police have a valid warrant or a recognized warrantless-search exception. Politely state that you do not consent to the search. The officer may proceed anyway if they have probable cause or believe an exception applies, but your refusal preserves your ability to challenge the search later in court. Many drug, weapon, and DUI cases in Rhode Island are dismissed when defense lawyers prove the search was unlawful. Never physically resist, but always state your objection clearly so it appears on the body camera and in the report.
