On Friday, a driver in Tempe was cited for making an illegal left turn and hitting one of Uber’s test cars, which was in self-driving mode with a test driver behind the wheel and another in the passenger seat. The Uber car ended up on its side, and a third car was struck. Nobody was seriously injured.

Uber temporarily halted the program to investigate the accident and gain a better understanding of what happened, but a spokesperson said Monday the company will redeploy its fleet here and in Pittsburgh, where it also is testing.