When you have an accident and believe the other person was more at fault than you were, it is almost always wise to immediately call the police so that a police report can be prepared. (In some areas, however, accident reports are only prepared if someone claims to be injured.) A police report is admissible as evidence in small claims court. The theory is that an officer investigating the circumstances of the accident at the scene is in a better position to establish the truth of what happened than is any other third party. So, if an accident report was made, buy a copy for a few dollars from the police station. If it supports you, bring it to court. If it doesn't, be prepared to refute what it says. This can best be done with the testimony of an eyewitness. If both an eyewitness and a police report are against you, you might want to rethink the idea of a lawsuit.