Originally Posted by
Jks9199
Not exactly. If you can't articulate some reasonable suspicion or provide a legitimate legal basis to detain those passengers, they are free to go. The driver has violated a law; you've got grounds to hold him and obstruct his movement. The passengers just had the misfortune of being in the car with the guy; you can't keep them for that.
At the same time, PA v Mimms and Md v. Wilson say that we can control the movements of drivers and passengers during a traffic stop. But if someone wants to leave, and you have no reasonable articulable suspicion to detain them longer, you cannot keep them there. In a routine stop, this doesn't typically become an issue. It's when you're taking the stop further into a criminal investigation that it comes up. At that point, just be sure that you can articulate why you kept that passenger there.
Same thing with pat downs; Terry v Ohio doesn't give an absolute right to conduct a frisk. A frisk is only legally permissible when you can articulate a reason to suspect that the person is armed. In Terry, Det. McFadden suspected that Terry was going to commit an armed robbery. He could explain why he thought that Terry was going to rob a store, and why he thought that he had a weapon. Unless you can articulate a reason why you thought that there was a weapon, you can't frisk a person.