My friend who is a taxi driver got 2 tickets. I'm wondering if he has any defense.

The first one is for speeding in Alachua county Florida. The radar used DP017891 Stalker DSR. I don't see anything else wrong with the way the ticket was filled out. The statue he was cited under is 316-189/1. Does this radar detector hold up in traffic court,and is this the right statue to charged on? The ticket amount is $244.

The second violation occurred in Nassua county Florida. It is for passing vehicles on the right hand shoulder. He did have paying customers in the can at the time and there was a wreck. The statue cited is 316.084(1.) The ticket amount is $151.

Any advice is welcome.