A Selection of California Vehicle Codes for riding motorized scooters:
Section 400-407.5 of the California Vehicle Code:
Section 400: Motorcycle: having a seat or saddle and traveling on not more than 3 wheels and less than 1500lbs.
Section 405: Motor Driven Cycle: a motorcycle with less than 150cc.
Section 407.5: Motorized Scooter: (A) A â€œmotorized scooterâ€ is any two-wheeled device that has handlebars, has a floorboard that is designed to be stood upon while riding, and is powered by an electric motor that is capable of propelling the device with or without human propulsion. Â This device may also have a driver seat that does not interfere with the ability to stand. Â For purposes of motorized bicycle or moped, as defined in section 406, or a toy, as defined in section 108550 of the Health and Safety Code, is not a motorized scooter. (B) A device meeting the definition in subdivision (A) that is powered by a source other than electrical power is also a motorized scooter.
A Class C license includes: (B)(3)(H) motorized scooters; (B)(3)(I) does not include motorcycle or motor-driven cycle.
So there you have it.