(a) No person shall board or alight from any vehicle while such vehicle is in motion.
(b) No person shall ride on any vehicle upon any portion thereof not designed or intended for the use of passengers. This provision shall not apply to an employee engaged in the necessary discharge of a duty or to persons riding within truck bodies in space intended for merchandise.
(c) No passenger in a vehicle shall ride in such position as to interfere with the driver's view ahead or to the sides or with his control over the driving mechanism of the vehicle.
(Added Coun. J. 7-12-90, p. 18634)