Section 400 Of Division 1. Words And Phrases Defined From California Vehicle Code >> Division 1.
400
. (a) A "motorcycle" is a motor vehicle having a seat or saddle
for the use of the rider, designed to travel on not more than three
wheels in contact with the ground.
(b) A motor vehicle that has four wheels in contact with the
ground, two of which are a functional part of a sidecar, is a
motorcycle if the vehicle otherwise comes within the definition of
subdivision (a).
(c) A farm tractor is not a motorcycle.
(d) A three-wheeled motor vehicle that otherwise meets the
requirements of subdivision (a), has a partially or completely
enclosed seating area for the driver and passenger, is used by local
public agencies for the enforcement of parking control provisions,
and is operated at slow speeds on public streets, is not a
motorcycle. However, a motor vehicle described in this subdivision
shall comply with the applicable sections of this code imposing
equipment installation requirements on motorcycles.