The U.S. Supreme Court has held that DUI checkpoints are a valid law enforcement method. Learn about the Court’s reasoning behind the decision and how probable cause applies to DUI checkpoint stops.
While radar guns are useful tools for detecting vehicles exceeding the speed limit, they have their weaknesses. Learn about how radar guns work, how to challenge radar gun evidence in court, and the new light detection and ranging technology.
Law enforcement agencies can set up roadblocks for “special needs” beyond the normal need for law enforcement. This article explains the special situations in which a roadblock may be used, like border security and drunk driving checkpoints.
You're driving and you see that a police officer's car has its lights flashing behind you. You hope the officer is just trying to get around you, but the officer shines his spotlight on you, and you know you're getting pulled over. While drivers all ...
Frequently asked questions about police traffic stops and vehicle searches. Find answers to your questions about what to do if you are pulled over, whether police can search your car, and what happens if your car is impounded.
A collection of common questions about traffic arrests. Find answers to your questions about the procedures police must follow while making an arrest, what happens once you’re in custody, and your right to an attorney.
Resources on police traffic stops and road blocks. Find information on when roadblocks are appropriate, whether DUI checkpoints are legal, how to challenge radar gun evidence, and more.
Under certain conditions, a police officer can conduct a search of your vehicle without a warrant. Learn about when vehicle searches are legal, the “plain view” doctrine, and how a frisk differs from a search.
You might have wondered if a police officer can search your car anytime you're pulled over. Well, under the Fourth Amendment to the U.S. Constitution, there are limits to when an officer can search your car. The Fourth Amendment protects individuals ...
A guide to what you should do after being pulled over for a traffic stop. This article provides information about the things you should do and the things you should avoid doing during each step of a traffic stop.