Uber’s self-driving vehicles have returned to the streets, three days after one was involved in a crash and flipped onto its side in Tempe, Arizona.

Reuters says that following an investigation, the ride-hailing gave the go-ahead for its fleet of autonomous vehicles to continue testing in the cities of Tempe, San Francisco and Pittsburgh.

A full police report on the accident in Tempe may be released as early as later this week and will conclude that the Uber vehicle was not responsible for the collision.

A spokeswoman for Tempe’s police department, Josie Montenegro, revealed shortly after the crash on Friday last week that the Uber was in self-driving mode at the time of the crash but that another vehicle failed to yield, thus causing the crash.

At the time, a driver and engineer were inside the Uber and the back seat was unoccupied.

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