Bicycle Laws in Arizona

Under Arizona Revised Statutes § 28-812, cyclists on public roadways or shoulders have all the rights and duties of a motor vehicle operator. Understanding these traffic laws protects you on every ride and strengthens your case if someone else’s negligence results in serious injuries.

Key Arizona Bicycle Laws at a Glance

• Status on the road. Like drivers, bicyclists share the road and hold the same duties, including obeying all applicable rules (§ 28-812). Related infractions cannot affect your license or insurance rates.
• Where to ride. Cyclists must ride as close to the right-hand curb or edge as practicable. You can occupy the full area when keeping pace with surrounding traffic, when the space is too narrow to share safely, when avoiding hazards, or when preparing for a left turn (§ 28-815).
• Passing distance. Motorists must stay at least 3 feet away when passing a bicyclist. Violations resulting in serious injury carry a civil penalty up to $500; those resulting in death carry up to $1,000 (§ 28-735).
• Designated bike lanes. These areas are for the exclusive use of bicycle riders. Other automobiles cannot drive, park, or stop in one. However, you are not required to use them and can ride in the full traffic lane at any time (§ 28-815).
• Lights and reflectors. At night, you must have a white light visible from 500 feet in front and a rear red reflector visible from 50 to 300 feet. A red rear light is also permitted (§ 28-817).
• Brakes. They must be capable of making the wheels skid on dry, level, clean pavement (§ 28-817).
• Hand signals. You must signal turns and stops before changing direction (§ 28-756).
• Riding two abreast. You may ride side by side but not more than two across. Riders must not impede the normal and reasonable flow (§ 28-815(B)).
• Helmets. There is no statewide helmet requirement for any age. Local ordinances in Tucson, Pima County, Flagstaff, Sierra Vista, Yuma, and Oro Valley require head protection for those under 18.
• Sidewalk riding. Arizona state law does not prohibit this, but local ordinances restrict it in many cities. Phoenix allows it unless posted otherwise. Tucson prohibits it unless posted otherwise. Other cities across the state set their own standards, so always verify before assuming you can ride on the walkway.
• DUI. You cannot be charged with DUI on a regular bicycle. Those on e-bikes can be charged because their vehicles are motorized (§ 28-1381).
• Dooring. Opening a car door into the path of an approaching cyclist is a violation (§ 28-905).
• Prohibited items. Sirens and whistles are not permitted. No bell or horn is required (§ 28-817).

What Is a Bicycle Under Arizona Law?

ARS § 28-101(10) defines a bicycle as a human-powered device, including racing wheelchairs. The device must have either two wheels each over 16 inches in diameter, or three wheels with at least one over 16 inches in diameter.

A bicycle is technically not a “vehicle” under the statutory definition (§ 28-101). However, § 28-812 grants cyclists all the duties of operators when riding on a public road or shoulder. Statutes that apply only to “vehicles” (such as the requirement for a horn) do not apply here.

This definition means:

• Children’s models with wheels smaller than 16 inches do not qualify under Arizona bicycle law.
• Electric bicycles equipped with operable pedals and a motor qualify.
• Tricycles and racing wheelchairs are also classified under this provision.

Understanding this distinction matters when filing a claim. As a vulnerable person, your legal protections depend on whether your device meets the statutory definition.

Your Protections as a Cyclist

You have the same duties and responsibilities as motor vehicle operators on the roadway (§ 28-812). No motorist may push you out of your space, honk you off, or force you onto the shoulder. When someone violates these protections and you are injured, you can hold them liable for your damages.

This state provides a protection most others do not: cycling-related violations cannot be used to suspend or revoke your license, and insurance companies cannot use them to increase your rates (§ 28-812(B)). However, any traffic violations while cycling can affect your settlement if you contributed to a collision.

Full Travel Area Use

Arizona law requires you to ride as close to the right-hand curb or edge as practicable (§ 28-815). However, you can take the full lane when:

The Governor’s Office of Highway Safety states: “You may occupy any part of the area when your well-being warrants it.” Adjusters often argue that a bicyclist should have been further to the right. If it was too narrow, taking the full space was your legal right, not a violation.

Rules for Designated Areas

You do not have to stay in bike lanes. ARS § 28-815(C) states these are for the “exclusive use of bicycles,” meaning other automobiles are excluded, not that you must stay in one. No person riding a bicycle may be forced into a marked area. No one may drive, stop, park, or leave any automobile in a designated area except in emergencies or when crossing to access a driveway (§ 28-815(D)).

Safe Passing: The 3-Foot Law

Motorists must provide at least 3 feet of space when overtaking you (§ 28-735). This foot passing law was enacted in 2000, making it one of the earliest such protections in the country. Despite being on the books for over two decades, AZ Bike Law notes the statute has been formally invoked only a handful of times.

Penalties carry notably low fines: up to $500 for serious physical injury, and up to $1,000 for wrongful death. Despite weak enforcement, passing too closely and causing a collision is direct evidence of negligence in your claim.

Rules for Cyclists

Arizona imposes specific operating duties on cyclists using public roads and shared pathways. After a collision, insurers often examine whether the rider complied with traffic-control requirements, signaling obligations, pedestrian safety rules, and roadway conduct statutes when evaluating liability and comparative fault.

Ride With the Flow

Arizona traffic law requires you to ride in the same direction as other automobiles. The act of riding a bicycle against oncoming traffic is illegal regardless of your position. Riding with the flow makes you visible, predictable at intersections, and reduces the risk of head-on collisions. Wrong-way riding is one of the most common contributing factors in fatal cycling incidents. Staying visible and predictable is the best way to protect yourself on any stretch.

Obey All Signals

Bicyclists must stop at every red light, yield at stop signs, and follow all traffic signals (§ 28-812). Ignoring traffic signals or posted warnings shifts partial fault to you and reduces your compensation under the comparative negligence rule. Even a minor infraction can give the insurer leverage to devalue your claim. Follow every posted rule to preserve full recovery.

Use Hand Signals

You must use hand signals to communicate changes and stops to others (§ 28-756):

1. Left: extend your left arm horizontally.
2. Right: extend your right hand horizontally, or bend your left elbow upward at 90 degrees.
3. Stopping or slowing: point your left hand downward.

Yield to Pedestrians

Pedestrians have the right of way at crosswalks and shared paths. When you are near a crosswalk or one of the nearby bike paths, slow down, give an audible signal, and let pedestrians pass before proceeding.

Slow-Moving Rule

If you are on a two-lane road and 5 or more vehicles are backed up behind you, pull off when safe to do so and allow them to pass (§ 28-704).

Use a Fixed Position

You must sit on a permanently attached seat (§ 28-813). Carrying passengers is prohibited unless you have a child’s carrier or an additional position designed for that purpose.

Required Equipment

Arizona bicycle safety laws set specific equipment requirements. Every bicycle must meet these standards in any lane on the road (§ 28-817):

• Brakes. They must be capable of making the wheels skid on dry, level, clean pavement.
• Headlight. A white headlight visible from at least 500 feet in front is required from sunset to sunrise.
• Rear marker. A red rear reflector from 50 to 300 feet is also required at night; rear lights are permitted but not required.
• Handlebars. You must keep at least one hand on the handlebars at all times (§ 28-816).
• Prohibited equipment. Sirens and whistles are not permitted, and no bell or audible warning device is required.

If all equipment met the requirements at the time of the crash, the insurer cannot argue equipment failure contributed to the accident. Keep receipts and photographs of your gear as evidence for your claim. Documenting your equipment before and after an incident strengthens your position.

Helmet Laws

There is no statewide helmet requirement for riders of any age. Local municipalities set their own rules for minors:

No jurisdiction requires adult cyclists to wear helmets. Not wearing head protection as an adult does not prove liability for a crash. The circumstances of the collision determine responsibility, not whether you wore protective gear at the time. Courts look at the totality of the collision, not your headgear.

Visibility Gear

Wearing bright, reflective clothing increases your visibility to motorists, especially during nighttime and low-light conditions. The rear markers are already required, but reflective gear is not mandated by law. It significantly reduces your risk of being struck.

Parent and Guardian Responsibility (§ 28-811)

These statewide laws apply to children riding bicycles on public roads. When a child violates a common bicycle regulation, the parent or legal guardian is held responsible (§ 28-811).

Where You Can Ride in Arizona

In a 2007 Phoenix Collision Summary, 70% of collisions between bicyclists and automobiles involved riding on the sidewalk. While this data is nearly two decades old, the underlying risk remains: people on them are less visible at driveways and intersections. To avoid accidents, use full traffic lanes wherever possible.

Dooring (§ 28-905)

Arizona law prohibits opening a car door unless it is reasonably safe to do so and can be done without interfering with other movement (§ 28-905). Dooring accidents occur when someone swings a door open without checking for approaching riders, sending the person into the door or into adjacent traffic lanes.

If you were doored, the person who opened the door is liable for your injuries and resulting damages. This is true even if you were not wearing a helmet or were slightly outside a marked area. The violation of § 28-905 is direct evidence of negligence in your claim.

Prohibited Cycling Behaviors

• Clinging to automobiles. Attaching yourself or your ride to any moving automobile is prohibited (§ 28-814).
• Carrying oversized items. You cannot carry any object that requires you to take both hands off the grips (§ 28-816).
• Riding without a proper position. Operating while sitting on the frame or any surface other than a fixed perch is illegal (§ 28-813).
• Excess passengers. Carrying more passengers than the design allows is prohibited (§ 28-813).

Can You Get a DUI While Cycling?

No, not on a standard pedal-powered cycle. The DUI law (§ 28-1381) applies to “motorized vehicles.” A traditional cycle is not motorized under § 28-101, so DUI charges do not apply.

However, you can be charged with public intoxication, reckless conduct, or disturbing the peace while cycling impaired. These charges carry their own fines and penalties, and a conviction can appear on your record.

E-bikes are different. Because e-bikes have electric motors, DUI statutes apply when impaired. Penalties are among the harshest in the country: a first offense carries mandatory jail time and fines exceeding $1,500 in surcharges. If you are facing charges related to cycling while impaired, contact an accident attorney to evaluate your options.

E-Bike Laws

Arizona classifies electric bicycles into three classes (§ 28-819):

All electric bicycles must have a motor rated at 750 watts or less and fully operable pedals. Each must display a label showing its class, top assisted rate, and motor wattage. No license, registration, or insurance is required. Class 1 and Class 2 models can use bike paths and multi-use paths. Class 3 models are prohibited on these paths unless the path is adjacent to a public road or local rules explicitly permit access.

Walkway and Restriction Rules by City

Current E-Bike Legislation

Senate Bill 1008 (2026 session) proposes statewide limits on multi-use paths: 15 mph maximum when the path is clear, 5 mph when passing others. The bill is pending as of May 2026. Check the Arizona Legislature website for current status before planning a ride on a shared-use path. Proposed changes could affect where and how fast you may ride. Stay informed so you are not caught off guard by any new ordinance in your area.

If you were riding an e-bike when you were hit, the same legal protections apply. Our experienced team handles all e-bike and e-scooter cases with these same protections.

City-Specific Laws

Under state law, Arizona allows local municipalities to adopt their own ordinances and regulations on top of statewide requirements. Make sure to check the local codes for the city where you ride, as rules vary between cities.

Your Legal Rights After an Accident

Arizona law gives injured cyclists a broader path to recovery than many states, but it also makes fault percentages and filing deadlines critical. After a crash, the value of the claim depends on how liability is assigned, whether a government entity is involved, and whether every statutory deadline is preserved.

Pure Comparative Negligence: No Threshold

Arizona follows a pure comparative negligence rule (ARS § 12-2505). There is no fault threshold that bars recovery. Someone found 30% responsible and recovered 70% of damages. Someone found 90% responsible still recovers 10%. This is more protective than states like Texas or Pennsylvania, where 51% responsibility eliminates your entire claim.

Insurance adjusters know this and build arguments to push your responsibility percentage as high as possible, because every percentage point reduces what they pay. A bicycle accident lawyer on your team can counter those arguments with evidence of the other party’s violation.

Filing Deadlines

You have two years from the accident date to file a personal injury lawsuit (ARS § 12-542):

• Your injury claim. 2 years from the date of the accident.
• Your child’s claim. The deadline is paused until they turn 18, then two years.
• Government claims. If your crash involved a defect maintained by the City of Phoenix, Maricopa County, or ADOT, you must file a notice of claim within 180 days (ARS § 12-821.01).

Insurers know this deadline. Some delay the process deliberately, hoping you run out of time or accept less under pressure. Do not let the clock run out on your claim. Our team tracks every deadline from the day you hire us and keeps you informed at each step.

What Drivers Owe Cyclists

Driver error contributes to 52% of all collisions involving cyclists across Arizona. The law requires every motorist to respect you as an equal user. Drivers must:

• Maintain at least three feet of safe passing space when overtaking.
• Yield at crossings.
• Check mirrors before opening car doors (dooring is a violation under § 28-905).
• Avoid aggressive behavior including tailgating, honking, and cutting you off.

This is also one of the few states that tests cycling-related knowledge on the licensing examination (§ 28-3164(1)(c)).

If negligence caused your crash, that conduct is evidence supporting your claim. Aggressive driving or reckless behavior may also support punitive damages in your personal injury case.

Accident Statistics

In 2024, Arizona recorded 1,379 crashes involving cyclists, a five-year high. Approximately 44 people were killed in bicycle accidents. Maricopa County accounted for 70% of fatal crashes. Pedestrian accidents and electric bicycle incidents represented a growing share of cases statewide.

The state ranked 37th on the 2024 Friendly State Report Card. Fatalities in the Phoenix metro represent a disproportionate share of all deaths, well above the national average.

According to Arizona Department of Transportation data, the leading causes of serious collisions remain distracted driving, failure to yield, and speeding. For national trends, see our car vs bicycle accident statistics page.

Safety Resources

These organizations provide information about laws regarding bicycle use, bike safety programs, and rider education across Arizona. If you have questions about the rules in your area, these are the best starting points:

Protect Your Claim

The law gives you the right to ride, but it does not stop drivers from violating that right. When a crash happens because of someone else’s negligence, you can pursue compensation for your injuries, lost wages, medical bills, damaged equipment, and pain and suffering. Our team brings decades of experience, having recovered over $1 billion for clients in car accidents, motorcycle accidents, and cycling cases nationwide.

Bicycle Accident Lawyers Group handles e-bike and e-scooter cases exclusively. Our team delivers justice through results for clients, not empty promises. Call us at 888-521-6377 for a free consultation with no exceptions and no upfront costs. We do not charge fees unless we recover the compensation you are owed. If you have questions about your case, schedule a free consultation today. There are no exceptions.

Ready to Get Started?

If you’re a cyclist who has been in an accident, call today for a free initial consult about your legal claim. We’re here to help with your legal questions. Contact our law firm for coast-to-coast bike accident and personal injury representation.

Start Your Free Evaluation

Posted by Robert Goldwater

Since his academic days at the UC Berkeley School of Law, Robert Goldwater has remained a committed advocate for victims of other people’s negligence. His tort law background, together with his unquenchable thirst for justice, helped young Robert found a now-successful law firm – Bicycle Accident Lawyers Group, gathering same-minded and promising attorneys from all over the country.

All articles by Robert Goldwater