Vehicle Code section 39000

“Bicycle”, for the purposes of this division, means any device upon which a person may ride, which is propelled by human power through a system of belts, chains, or gears having either two or three wheels (one of which is at least 20 inches in diameter) or having a frame size of at least 14 inches, or having four or more wheels.

Source: Section 39000, https://leginfo.­legislature.­ca.­gov/faces/codes_displaySection.­xhtml?lawCode=VEH§ionNum=39000.­ (updated Jan. 1, 1978; accessed Jun. 25, 2025).

Green check means up to date. Up to date

Verified:
Jun. 25, 2025

§ 39000's source at ca​.gov