Ride-hailing firm Uber has been issued a permit by the Department of Motor Vehicles in California to test self-driving cars on public roads.
The decision comes nearly two years after one of Uber's self-driving cars was involved in a fatal crash in Arizona.
California allows companies to test self-driving technology with a backup driver in the car.
Before the fatal crash, Uber's self-driving cars were being tested in four locations in the United States - Phoenix, Toronto, Pittsburgh and San Francisco.
Uber said it is considering using San Francisco, where the company is based, again. It did not give a timeline for when it will resume testing.
In 2019, prosecutors ruled that Uber was not criminally liable for the crash.
Uber said its self-driving programme "underwent an overhaul" following the incident.