(Bloomberg) – A recent crash involving an Uber Technologies Inc. driverless car suggests autonomous software sometimes takes the same risks as the humans it may one day replace. 

The accident on Friday in Tempe, Arizona, caused no major injuries. Another human-driven car turning left failed to yield, hit the Uber car and flipped it on its side. After a short pause, the company's self-driving test fleet was back on public roads in Tempe, Pittsburgh and San Francisco early this week. 

Complex story

But the Tempe Police Department report, released Wednesday, recounts a complex story.

The Uber Volvo SUV, outfitted with autonomous driving sensors, was heading south on a wide boulevard with a 40 miles-per-hour speed limit. It had two of the company's test drivers in front and no paying passengers. The light turned yellow as the vehicle entered an intersection. A green Honda on the other side of the road was trying to make a left at the light. The driver thought it was clear and turned into the oncoming Uber SUV, according to the police report.