Alphabet Inc.’s Waymo is launching a new account type that lets teenagers hail a robotaxi and ride alone, expanding its rider base while continuing to test its service in more US cities.

Waymo, Alphabet's (NASDAQ:GOOG) (NASDAQ:GOOGL) robotaxi unit, is offering accounts for teenagers aged 14-17 to hail fully autonomous rides in Metro Phoenix, Arizona. Teens in the area can travel independently with Waymo when linked to a parent or guardian's account,

Starting this week, teens as young as 14 years can now ride in a Waymo self-driving vehicle by themselves when linked to a parent or guardian's account.