An overview of Michigan'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.
Helmet rules
Required under age
No statewide age requirement
Applies to passengers
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Standard
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Penalty
No statewide bicycle helmet law. Some municipalities require helmets for minors — check local ordinances.
Michigan Compiled Laws § 257.660c expressly permits bicycles on sidewalks and crosswalks: a rider on a sidewalk has the rights and duties of a pedestrian, must yield the right-of-way to pedestrians, and must give an audible signal before overtaking. The statute does not apply where local authorities have prohibited bicycles on a particular sidewalk by official traffic-control device. Detroit, Grand Rapids, and Ann Arbor each restrict sidewalk riding in their central business districts via posted signs.
Michigan's OWI statute (MCL 257.625) applies to operators of a 'vehicle,' but the Vehicle Code's definition of vehicle (MCL 257.79) excludes 'devices exclusively moved by human power,' which leaves bicycles outside the statute. Cyclists may still face disorderly-person or public-intoxication charges under MCL 750.167.
Lamp on the front emitting a white light visible from at least 500 feet to the front.
Rear requirement
Rear reflector only
Rear spec
Red rear reflector visible from 100 to 600 feet when directly in front of lawful low-beam headlamps. A red rear lamp visible from 500 feet may be used in addition to the reflector but does not replace it.
Two abreast permitted on the roadway except on roadway portions set aside for the exclusive use of bicycles, where the cap does not apply. Three or more abreast is not permitted on the roadway.
Bicycles are prohibited on Michigan Interstate freeways (I-75, I-94, I-96, I-69, I-275, I-696) under Michigan Department of Transportation (MDOT) controlled-access regulations. The Mackinac Bridge runs an annual Labor Day bike-walk crossing under MDOT escort. Conventional US and state routes (US-2, US-23, M-22) remain open to bicycles.