If you are involved in a collision, stop your car at or near the collision scene. If you can, move your car off the road so you do not block traffic. Protect yourself and others from oncoming traffic. Failure to stop at the scene of a collision in which you are involved can result in your arrest warrant. You could be convicted of hit and run. You must report the collision to your insurance company, the Department of Motor Vehicles, and local police authorities. Consult your state's Drivers Handbook for details.
Exchange information with other people involved in the accident as soon as possible. Get information (e.g., names, addresses, telephone number, drivers license, registration and insurance information) from the other driver(s) involved in the collision. Get the names and addresses of witnesses to the accident.
If you hit an unattended vehicle, you must make a reasonable effort to find the owner of the vehicle or property damaged in the collision. If you cannot locate anyone, leave a note with your name and contact information that can be found easily at the scene of the collision. You must also report the collision to the police.