On Tuesday, the California Department of Motor Vehicles (DMV) officially approved rules to allow the testing of autonomous vehicles on public roads. The rules will take effect September 16, 2014. The move has been a long time coming, with the DMV promising back in December 2013 that it would post regulations for public use of self-driving cars and then holding a public hearing in January to address concerns about them. These new rules will set a statewide standard for all manufacturers. (Although Google has been running pilot programs in Mountain View and elsewhere, it’s not the only company pursuing an automated vehicle—Nvidia told Ars last week that Audi has plans to incorporate a “cruise control for stop-and-go traffic” feature in one of its cars come 2015.)