Virtually all car accidents must be reported to local law enforcement, according to Arizona state law. The only exception is extremely minor incidents that do not result in any physical or property damage, but these are rare. If you do not call the police after a car accident, you will not have a police report of the incident, which will be essential to a personal injury claim later if you need to file for damages. We strongly encourage always calling law enforcement to the scene of an accident as a way to protect yourself.