(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.

Waymo will expand its autonomous ride-hailing service across key areas of Los Angeles beginning Wednesday, marking the company’s second major service expansion in the region this year.