The one-wheel patch — for any code that defines a self-balancing device as "two nontandem wheels"
One clause, inserted into a definition already in forcePEVRA has written this text
Three words inserted into an existing electric personal assistive mobility device definition. The smallest repair on this page, and the one most likely to pass in a single session.
This template is filed under the slug arizona-patch because that is the URL the site's plan reserved for it, and because Arizona's electric personal assistive mobility device definition is the code that motivated it. PEVRA has not yet opened Arizona's statute in a browser, so this page names no Arizona section number and quotes no Arizona text. It will, the day a steward files the citation.
The pattern it repairs is not Arizona's alone. A great many US codes define an "electric personal assistive mobility device" — a legal class first written in 2001 to describe a two-wheeled, self-balancing platform — as a self-balancing device with two nontandem wheels. A self-balancing device with one wheel is, word for word, not it.
The repair is three words. It does not create a class, does not set a threshold, does not touch an operating rule, and does not cost anything.
Draft text
PEVRA’s own drafting. Bracketed numbers are the ones a legislature chooses. Copy it, change it, put your own name on it — that is what it is for.
In the definition of "electric personal assistive mobility device", strike
"a self-balancing device with two nontandem wheels"
and insert
"a self-balancing device with one wheel or two nontandem wheels".What the law already says
Each quotation below comes from a citation record in PEVRA’s database, with that record’s evidence tier and the date its own source prints.
a self-balancing device with one wheel designed to transport only one person by an electric propulsion system with an average power of two thousand watts (two and two-thirds horsepower) having a maximum speed on a paved level surface, when powered solely by such a propulsion system, of less than twenty miles per hour
RCW 46.04.1695 ("Electric personal assistive mobility device") — the one-wheel clauseTier C — secondary source; context only, never supports a verdictThe source prints no date of its own
Washington is the one US electric personal assistive mobility device (EPAMD) definition PEVRA has on file that already carries a purpose-built single-wheel clause. Illinois' electric unicycle definition uses one-wheel language directly, and Santa Fe names the device a "unicycle" elsewhere in its own section (the ceiling sentence quoted at /act/model-law/santa-fe-uto does not itself mention wheels); neither is drafted as an amendment to an EPAMD-style definition, which is the specific class most "two nontandem wheels" statutes use. A legislator asking whether this exact patch has been done anywhere can be shown language that is already in force.
Drafting notes
This is the cheapest bill on the page and the one to reach for when a session is short. It leaves every threshold, every operating rule and every penalty exactly where the legislature already put them; the only thing it changes is which devices reach them.
A drafter who wants the whole category rebuilt rather than patched should use the Illinois rebuild template instead.
Education, not a request. This page states what the law says and what PEVRA has drafted; it asks nothing of you. All templates · Common objections, answered
Template last changed 2026-08-29 · git c35aac7
This page is legal information, not legal advice, and is not a substitute for the advice of an attorney. Nothing here should be construed as an attempt to offer or render a legal opinion or otherwise engage in the practice of law. PEVRA does not warrant that this information is complete or accurate and disclaims all liability for any loss caused by errors or omissions. Laws change; check the 'as of' date and the official source linked on every claim.