Well I don’t know if you’re looking for anything specific but they can legally do a lot of thing. But remember your rights!!
10 things to remember about your rights as a driver:
You can wait to pull over right away if it’s not safe.
Officers require probable cause to pull you over.
You can typically stay in your vehicle during a traffic stop.
You can call on your Fifth Amendment right to stay quiet.
You don’t have to take a roadside breathalyzer test.
You have to stop at police checkpoints if you’re selected.
You can record encounters with police.
Police can search your vehicle with enough reason.
The laws about traffic stops in each state are often different.
You can protest an illegal stop with legal help.