Is it legal? If the off duty police officer has commited some sort of ticketable offense, yes.
Yes, an off duty police officer can write a ticket on or off duty. The ticket can be mailed to you, or you can be served with a subpoena to appear in court to answer to the charge on the ticket.
Question is not specific enough about what is being asked: BUT - if you are an officer and if you were assaulted simply because you were an officer, it makes no difference if you were on or off duty, or on or off the property. The offense would the same as if you were on duty in the performeance of your duty.
Assuming you're talking about grammar, no, it's "the police have a duty."
Of course! The may be off duty but they can still arrest you.
I think you do not get paid because it is a united states duty and your risking your life
Police car, or Police Department.
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 or officers on duty in a particular location.
if the call of duty requires it, yes police can speed.
A police officer is a police officer 24/7/365, whether they on or off duty, or whether they're on vacation or not. every police officer has an on duty and off duty gun, they can only carry their off duty guns, and can only use it if he/she or someone else is in danger.