Four self-driving vehicle accidents in California since September

There are around 50 self-driving cars traveling in California, with four of them reportedly involved in auto accidents since September, according to reports. Three of the accidents involved the Google-equipped Lexus SUVs, while the other was an Audi SQ5 Delphi self-driving vehicle.

All four accidents were low-speed incidents, at 10 miles per hour or less, with Google and Delphi saying their vehicles were not at fault in any of the reported accidents. The California Department of Motor Vehicles (DMVs) didn't offer a public statement, though the DMV is now tracking self-driving vehicles.

Earlier in the year, a Delphi self-driving vehicle successfully completed a cross-country journey - and Google has tested its autonomous vehicle on California roads since late 2014