If you live in California, you may soon start to see self-driving cars on the road with no operators to be seen. California Governor Jerry Brown signed into law on Thursday a bill that allows a self-driving vehicle with no operator inside to test on a public road. Currently, companies are legally able to test self-driving cars in California as long as the operators are located inside the vehicles when they are being tested. Fortune reports: The bill introduced by Democratic Assemblywoman Susan Bonilla allows testing in Contra Costa County northeast of San Francisco of the first full-autonomous vehicle without a steering wheel, brakes, accelerator or operator. New legislation was necessary because although driverless vehicles can be tested on private land like the office park, the shuttle will cross a public road on its loop through the campus. The new law means that two cube-like Easymile shuttles that travel no faster than 25 mph (40 kph) will be tested for a period of up to six months before being deployed and used by people. In an interview with Reuters in March, Bonilla said the "natural tension" between regulators concerned about safety and lawmakers trying to encourage innovation in their state necessitated a new bill. "They're risk averse and we're saying we need to open the door here and take steps (to innovate)," Bonilla said, calling the driverless shuttle project "a very wise first out-of-the-gate opportunity" to show how the technology could work safely.