An overview of Wyoming's bicycle laws, reviewed and cited to primary sources. Use the sections below to jump to a specific rule, or the Sources block at the end for the full citation list.
This guide is for general information only and is not legal advice. Laws change — verify current rules with your state DOT or a licensed attorney before relying on this for any legal matter. Read full disclaimer.
Wyoming's bicycle statutes are silent on sidewalk riding; regulation is left to municipalities under their general traffic-ordinance authority. Cheyenne and Casper allow sidewalk riding outside designated downtown business districts; Jackson restricts it in the Town Square area. Always check the municipal code before riding the sidewalk.
Wyoming's DUI statute (W.S. § 31-5-233) applies to a person who drives or has actual physical control of a 'vehicle,' but the general vehicle definition in W.S. § 31-1-101(a)(xxiii) excludes devices moved exclusively by human power. As a result, the standard DUI statute does not reach bicycle riders. An impaired cyclist who endangers others may instead be charged under reckless-operation or public-intoxication statutes.
Lamp on the front emitting a white light visible from a distance of at least 500 feet to the front.
Rear requirement
Rear reflector or light
Rear spec
Red reflector on the rear of a type approved by the Department of Transportation, visible from 100 to 600 feet to the rear when directly in front of lawful upper-beam headlamps. A red rear lamp visible from 500 feet to the rear may be used in addition to the reflector.
Wyo. Stat. § 31-5-705 permits riding no more than two abreast except on paths or parts of roadways set aside for the exclusive use of bicycles. Riders shall not impede the normal and reasonable movement of traffic.
WYDOT expressly permits bicycle travel on the shoulders of all Wyoming Interstate highways (I-25, I-80 and I-90) — across most of the state the Interstate is the only paved through-route, and the policy reflects that geography. Specific tunnels and certain urban segments through Cheyenne and Casper are signed prohibited; consult WYDOT's bicycle-travel guidance for the current corridor list.