Wyo. Stat. § 31-5-954 (2026)

(a) 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 and off-road
recreational vehicles as defined by W.S. 31-1-101(a)(xv)(K) that
are operated pursuant to W.S. 31-5-1601 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.