Yes, they are supposed to according to training, but they are not legally obligated to say it the way I stated.
You do have the right to remain silent, but the cop also has the right to order out of the car, call the drug dog, and run your full history as a result of your silence. It is his discretion and he may or may not do it, but he legally can. Just don’t get mad if he does it because your actions, though legal, caused his legal response.
I have a news flash for you the cop can order you out of your car and call a K-9 if you tell him what kind of jelly you had on your toast this morning and you are on the way to Grandma’s house.
Everyone has the right to decide what questions they will answer during a routine traffic stop. Cops should not be on fishing trips just because you failed to yield the right of way. They don’t need to be asking you where you were going its none of their business.
The police have a job to do and they are not your friend. Just remember that. Be polite and give only information you are required to give.