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 said it will offer “specially-trained Rider Support agents” during rides hailed by teens and loop in parents if needed.

Waymo will test their self-driving cars this summer in Philadelphia and New York as the company preps for further expansion of its rideshare services.