Arizona requires no special permits or licensing for self-driving vehicles.

The officer, who was in front of the Tesla driver, stopped for a stoplight, police said. After also stopping briefly, the Tesla began moving forward, prompting the officer to jump off his motorcycle and move away. The car struck the fallen motorcycle, but no damage was reported to either vehicle.

Because it was such a minor collision, Phoenix police spokesman said, there will be no further investigation. The officer was not harmed, and no citations were issued.

The incident came days before a crash in Tempe involving an Uber automated car.

Who do you direct your road rage at?