No, it's just an inquiry and is legal unless they are forcing you to answer the question,.
No...you can if he/she ask a lift.an nowadays some police are using public transport.
If you are a police officer you would not need to ask. A police officer doing his duty will treat another police officer as any member of the public (if they are out of uniform and off duty).
A police officer should show his badge when he approaches you. If the badge is not visible, ask to see it. If you ask for the badge number, the officer should give it to you. If the officer refuses, you should report it to the police department.
Ask a police officer
You ask the police officer, or they would've turned in their badge,you would see them without a badge.
In the US, a police officer ... or anyone else ... is allowed to ask if you use drugs. You're not necessarily obligated to tell them, but they're allowed to ask.
Generally speaking, yes.
At your local police station or police headquarters. Ask to speak to a supervisor, or the shift commander.
They don't have to read them unless you ask them to.
Tell him.
Registration.
Assumedly you know the officer's police department for which he works. You can call the non-emergency number and ask for that officer's voicemail.