The traffic cams take photos and video, and they cover the entire intersection in one direction. If they were stopped in the middle, or even on the other side near the opposite lights this should have been caught on camera. Go to the police station immediatly with the time and location of this and they should sort it out.

Explain to them what happened so they can be on the lookout for this type of thing. I have been told that the video of these cameras is very good and that they can zoom in on plate numbers. Not sure of the accuracy but I hope this is the case. _____________________________________________________
"Diplomacy is the art of saying 'Nice doggie' until you can find a rock - Will Rogers"