As the other attorneys have said this is legal. The officer that used the radar gun would have to be at the trial if you pled not guilty. An attorney maybe able to negotiate a lower speed or a non-moving violation. However, regarding the stop, you could inquire with the police department on their complaint process. You could also inquire into video cams in the vehicle as a piece of evidence supporting your complaint.
Yes, this is legal. One officer can rely on information communicated by another officer to have sufficient basis for a stop.
It is not unusual for the police to work as a team with one using the radar or laser and the other actually issuing the citation. It is the same thing if you are dealing with an airplane ticket.
There are legal arguments that can be made about this issue but you would do well to hire an attorney who handles this type of case.
