If you are Unit 1, you are considered the striking vehicle, not necessarily the "at fault" vehicle. It could mean that you both were at fault but you were the striking vehicle. However, 99% of the time the Unit 1 is considered at fault. The other 1% is when it cannot be determined by the Officer. Were you or the other driver issued a ticket? If so, a court date should have been assigned. I'm a cop, and I have investigated 100's of accidents.