(Reuters) -Waymo will expand into more areas of the San Francisco peninsula and parts of Silicon Valley, as the sole commercial robotaxi operator in the U.S. seeks to scale up operations, the Alphabet unit said on Tuesday.

Waymo has expanded its service area in two populous parts of California. The company's robotaxis have begun operating in new neighborhoods throughout San Francisco and Los Angeles.

The latest rollout expands Waymo’s Bay Area service area by 80 square miles and is the company’s third major launch on the Peninsula since it began operating outside San Francisco last August, starting with Daly City, Broadmoor and Colma. It added service in parts of northern Santa Clara County in April.