Wyo. Stat. § 31-5-951: Brakes on motor-driven cycles.

(a) The superintendent may require an inspection of the braking system on any motor-driven cycle and disapprove any brake which in his opinion is not so designed or constructed as to insure reasonable and reliable performance in actual use.

(b) The department may refuse to register or may suspend or revoke the registration of any motor-driven cycle when it is notified by the superintendent that the brake thereon does not comply with the provisions of this section.

(c) No person shall operate on any highway any motor-driven cycle if the superintendent has disapproved the brake equipment upon that motor-driven cycle or type of motor-driven cycle.