Yes
consequence
No, they do not. All they require is suitable identification as a police officer. They will usually wear their uniform, however, and merely use unmarked/mufti cars.
Yes, in most places, citizens can report a speeding police officer to the appropriate authorities, but they should not attempt to pull over the officer themselves. It is best to contact the police department or highway patrol to report the incident.
The police officer does not own the police car, the jurisdiction he works for owns it, and yes a uniformed officer can drive an unmarked vehicle.
Yes, an unmarked police car driven by a police officer in plain clothes can legally pull you over for a traffic violation.
Yes, a California police officer can hide and has no obligation to identify himself depending on the situation. They often use this trick to catch people speeding on the highway.
Yes.
yes
A marked police car has all the stickers such as Police, Dial 911 ect. and an unmarked car is as it says it has none of those decals to indicate it's a police car.
I believe it refers to the officer's squad car. Stating that the car he/she pulled you over in was a marked car. Making it obvious that it was a police officer. Unlike an unmarked police car that would probably be driven by an undercover or plain clothes officer.
Speeding will result in a fine, if the police catch you.
Yes, and some (especially highway patrols) do. However, most police officers will go out of their way to avoid citing another officer. This practice is called "professional courtesy," and it is somewhat controversial.