California Vehicle Code
Sec. § 407


A motorized quadricycle is a four-wheeled device, and a motorized tricycle is a three-wheeled device, designed to carry not more than two persons, including the driver, and having either an electric motor or a motor with an automatic transmission developing less than two gross brake horsepower and capable of propelling the device at a maximum speed of not more than 30 miles per hour on level ground. The device shall be utilized only by a person who by reason of physical disability is otherwise unable to move about as a pedestrian or by a senior citizen as defined in Section 13000.
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Last accessed
Jun. 6, 2016