Responding to a violation of your Fourth Amendment rights

A traffic stop on Interstate 10 or Interstate 12 in Baton Rouge may lead to a search of your vehicle and criminal charges. Knowing how federal and Louisiana law restricts officers helps you recognize an illegal stop or search and the steps for challenging it.

Constitutional limits on police authority

Under the Fourth Amendment, police must obtain a warrant from a judge before a search unless an exception applies. The judge issues a warrant only when the facts show probable cause, meaning a fair chance that officers will find evidence of a crime in the place they plan to examine.

Article I, Section 5 of the Louisiana Constitution protects you from unreasonable searches, seizures and invasions of privacy. The Fourth Amendment does not mention privacy by name. Anyone negatively affected by a search or seizure that violates the state provision has standing to challenge it in court.

Traffic stops along I-10 and I-12

A traffic stop by the Baton Rouge Police Department or East Baton Rouge Sheriff’s Office (EBRSO) restricts your freedom to leave and counts as a Fourth Amendment seizure. Courts assess each stage separately:

• Stopping you requires reasonable suspicion, based on specific facts that suggest a traffic violation or other offense.
• Holding you beyond the time reasonably needed to address the traffic violation requires reasonable suspicion of further criminal activity.
• Searching your vehicle without a warrant requires voluntary consent or another recognized exception.

Under the Fourth Amendment, the judge assesses the facts supporting the stop. The officer’s motive alone does not justify excluding evidence.

Challenges to improperly obtained evidence

Under Louisiana law, you may file a motion to suppress, which requests that the judge bar the prosecution from using evidence from an illegal stop or search at trial. The filing deadline falls 30 days after your defense receives initial discovery, or the first materials the prosecution discloses. The law may set a different deadline, and the judge must grant more time when you show good cause.