A friend's father was the Commander of the local State Police Post. He lived by a railroad track that had been out of use for several decades yet there was still a stop sign at the crossing by his house. Everyone knew this sign was obsolete and no one stopped for it. He was pulled over by a local town police officer and issued a ticket for running the stop sign. Officer told my friends father, "just because you are a state patrolman doesn't give you the right to run this stop sign".
A couple days later, friends father was going to lunch in his state cruiser and the town officer speeds by him in his town cruiser. State Trooper pulls him over and gives him a speeding ticket. Friends father tells him "just because you are a town cop and driving a police car doesn't give you the right to speed and break the law when you are not responding to a call".