31-5-954. Mirrors.
(a) On or before January 1, 1986, every motor vehicle including motorcycles, motor-driven cycles, multipurpose vehicles, mopeds and off-road recreational vehicles as defined by W.S. 31-1-101(a)(xv)(K)(II) that are registered pursuant to W.S. 31-2-232 shall be equipped with a mirror mounted on the left side of the vehicle and so located as to reflect to the driver a view of the highway to the rear of the vehicle.
(b) Every motor vehicle except a motorcycle, motor-driven cycle or moped, shall be equipped with an additional mirror mounted either inside the vehicle approximately in the center or outside the vehicle on the right side and so located as to reflect to the driver a view of the highway to the rear of the vehicle.