Amazon’s self-driving robotaxi unit Zoox under investigation by United States after two rear-end crashes

Amazon’s self-driving robotaxi unit is being investigated by the US government’s highway safety agency after two of its vehicles braked suddenly and were rear-ended by motorcyclists.

The National Highway Traffic Safety Administration said in documents posted on its website Monday it will evaluate the automated driving system developed by Zoox.

Both crashes happened during the daytime hours, and the motorcyclists suffered minor injuries. In both cases, the agency confirmed that each of the Amazon vehicles was operating in autonomous mode leading up to the crashes.