Wyoming Bicycle Laws

Required under age

No statewide age requirement

Applies to passengers

—

Standard

—

Penalty

—

Statute

—

Confirm equipment fit with the helmet size calculator before relying on an age rule alone.

Statewide rule

Defers to local rules

Notes

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.

Statute

—

A bell does not replace yielding or signaling, but it can warn other path users; compare bike bells and horns.

Applies to bicycles

No

Separate cycling DUI statute

No

BAC limit

—

Penalty

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.

Statute

¹²

If alcohol or drugs may impair the rider, do not ride; arrange another way home and secure the parked bike with a lock suited to the theft risk.

— Not yet researched.

Front light required

Yes

Front spec

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.

Side reflectors

—

Pedal reflectors

—

When required

Darkness

Statute

¹

For equipment that matches the visibility requirement, compare bike lights by beam and runtime.

— Not yet researched.

Two abreast allowed

Yes

Conditions

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.

Statute

¹

For low-light road and group visibility, compare bike lights for commuting and unlit roads.

Rule

—

Statute

—

A mirror can supplement direct observation but cannot replace shoulder checks or hearing traffic; compare bike mirrors by mount type.

— Not yet researched.

Bicycle registration required

No

Operator license required

No

For theft prevention when the bike is parked, compare bike locks for different risk levels.

Interstates

Allowed

Notes

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.

For low-light road and group visibility, compare bike lights for commuting and unlit roads.