Arizona

How the law defines it: Three-class system: bicycle or tricycle with working pedals and a motor under 750 W. Class 1 (pedal assist) and Class 2 (throttle) stop assisting at 20 mph; Class 3 (pedal assist) at 28 mph. Not a vehicle or motor vehicle under Title 28.

Helmet

Not addressed in statute.

Minimum age

None in statute.

Speed limit or cap

Motor assist stops at 20 mph (Class 1/2) or 28 mph (Class 3).

Motor power cap

Under 750 W

License, registration, insurance

No title, registration, vehicle license tax, driver's license or insurance.

Also worth knowing

Since Jan. 1, 2019 manufacturers must label each e-bike with its class, top assisted speed and motor wattage. Cities may regulate e-bikes under § 28-627(A)(14).

How the law defines it: "Electric standup scooter": under 75 lb, two or three wheels, handlebars, a floorboard to stand on, electric and/or human power, top speed 20 mph or less on level pavement. A separate "electric miniature scooter" class covers devices under 30 lb with a 10 mph top speed. Neither is a vehicle or motor vehicle.

Helmet

Not addressed in statute.

Minimum age

None in statute.

Speed limit or cap

20 mph (electric standup scooter); 10 mph (electric miniature scooter).

Motor power cap

None in statute.

License, registration, insurance

No title, registration, vehicle license tax, driver's license or insurance.

Also worth knowing

Each electric standup scooter must carry a unique letter/number ID visible from 5 feet. The bicycle-rules provision (§ 28-819) names electric standup scooters only; the statute gives no operating rules for electric miniature scooters.

How the law defines it: "Motorized skateboard": self-propelled device with no handlebars, a motor, a deck to ride on and at least two tandem wheels. Excluded from "motor vehicle."

Helmet

Not addressed in statute.

Minimum age

Not addressed in statute.

Speed limit or cap

Not addressed in statute.

Motor power cap

Not addressed in statute.

License, registration, insurance

Not a motor vehicle. Cities may not require registration or licensing of motorized skateboards.

Also worth knowing

Single-wheel self-balancing boards (Onewheel-style) do not have two tandem wheels, so they fall outside the motorized skateboard definition. They may instead meet the EPAMD definition (self-balancing, one wheel, speed limited to 15 mph); see the EUC entry. The statute does not say which applies.

How the law defines it: Covered by "electric personal assistive mobility device" (EPAMD): self-balancing device with one wheel or two side-by-side wheels, electric drive limited to 15 mph or less, for one rider. Not a motor vehicle.

Helmet

Not addressed in statute.

Minimum age

Not addressed in statute.

Speed limit or cap

Device must be limited to 15 mph or less to count as an EPAMD.

Motor power cap

Not addressed in statute.

License, registration, insurance

Not a motor vehicle; no license or registration provisions apply.

Also worth knowing

Only electric unicycles whose propulsion system limits top speed to 15 mph fit the EPAMD definition. Faster models are not covered by any specific definition.