If you are involved in a minor traffic collision and can't find the other driver, what must you do?

In the event of a minor traffic collision where the other driver cannot be found, it is important to take appropriate steps to ensure legal and responsible handling of the situation. Leaving a note on the vehicle allows you to provide your contact information to the other driver, should they return to their vehicle. This promotes good faith and accountability, as it allows the other party to reach out to you regarding the accident.

Additionally, reporting the accident without delay to the city police or California Highway Patrol (CHP) is essential for documentation and legal purposes. An official report can be important for insurance claims and establishing responsibility for the collision. Notifying law enforcement also helps maintain safety on the road, especially if there is a chance that the other driver may return or needs to be located.

Taking both of these actions demonstrates responsible behavior as a driver, contributing to a proper resolution of the incident. Thus, pursuing both of these actions, as noted in the correct answer, is the best course of action following a minor traffic collision.