Tracked ATVs in Idaho: What the State Publishes

Two layers of explicit treatment, one favourable and one not. First, Idaho Code 67-7101(15) writes track steering into the snowmobile definition itself, and the definition is not limited to snow: it covers a machine "designed primarily for travel on snow or ice or over natural terrain." Second, IDPR's official Snowmobiling in Idaho guide reprints that definition, adds its own parenthetical interpretation, and devotes a headed section to tracked ATVs and UTVs on groomed trails. The reclassification runs the other way too, and it removes rights: Idaho Code 67-7101(1) defines an ATV as a machine with "three (3) or more tires and fifty-five (55) inches or less in width, with a wheelbase of sixty-one (61) inches or less, and with handlebar steering and a seat designed to be straddled by the operator," and 67-7101(17) requires a UTV to travel "on four (4) or more tires," so a fully tracked machine satisfies neither. Since Idaho's generous OHV road privileges in 49-426(3) run to vehicles numbered as off-highway vehicles under 67-7122 or 67-7124, losing ATV and UTV status puts those privileges in doubt.

"Snowmobile" means any self-propelled vehicle under two thousand (2,000) pounds unladened gross weight, designed primarily for travel on snow or ice or over natural terrain, that may be steered by tracks, skis, or runners. (A tracked ATV or UTV meets the definition of a snowmobile).Idaho Code 67-7101(15), as reprinted with IDPR's interpretive parenthetical in Snowmobiling in Idaho (IDPR), Definitions page — source · read 2026-09-26

As a snowmobile, the machine takes an IDPR snowmobile certificate of number: $45.50 per season, and the Idaho snowmobile season runs November 1 through October 31, so the sticker covers a full twelve months, not just winter. The validation sticker has to be visible and legible whenever the machine is operating. For comparison, the OHV certificate of number that a wheeled ATV buys is $12 and runs on a calendar-year season, January 1 through December 31. IDPR sells both online, by phone and through authorized vendors. Rental machines pay $75.50.

The operator of each snowmobile requiring numbering by the state of Idaho shall obtain a certificate of number for the snowmobile, which certificate of number shall be issued by season, for seasons running from November 1 through October 31. To obtain a certificate of number, the operator shall pay a fee of forty-five dollars and fifty cents ($45.50).Idaho Code 67-7103(1) (snowmobile certificate of number); compare Idaho Code 67-7122(1) ($12 OHV certificate of number) — source · read 2026-09-26

A different document, other jurisdictions
Registering a Tracked Quad sets several named agencies' own class definitions side by side, and shows that they are not written to a common test. It settles nothing for Idaho; what Idaho publishes is directly above.

Groomed snowmobile trails are open to you where the county has allowed it, and closed where it has not. Idaho Code 67-7112 gives counties the option to admit "all-terrain vehicles and snowmobiles over one thousand (1,000) pounds unladen gross weight, if numbered as a snowmobile," to county snowmobile trails, and provides that no other vehicles run on groomed trails unless the county specifically allows it. Note the 1,000-pound threshold, which the county-option language turns on: a tracked machine over it plainly needs the county's permission, while a lighter one that is simply a snowmobile under 67-7101(15) may not be an "other vehicle" at all — Idaho has not published a reading either way. IDPR's own guidance is the practical answer: call the sheriff's office in the county you plan to ride, because the answer genuinely varies county to county. Outside the groomed-trail system, Idaho's public-land trail access is set by the land manager's own designations.

The use of tracked ATVs and UTVs on groomed snowmobile trails varies from county to county. Please contact the sheriff's office within the county you plan to recreate in for current ordinance information. 67-7112 — Any tracked ATV or UTV operating on a groomed snowmobile trail must purchase a snowmobile certificate of number sticker.Snowmobiling in Idaho (IDPR), "Tracked ATV and UTV on Groomed Snowmobile Trails"; Idaho Code 67-7112 (Groomed snowmobile trails) — source · read 2026-09-26

A different document, other jurisdictions
Groomed Snowmobile Trails quotes named agencies in other jurisdictions on the groomed-trail question, and they do not agree with each other. It settles nothing for Idaho; what Idaho publishes is directly above.

Which road rule applies depends on whether the machine is being treated as a snowmobile or as an OHV, and that is the genuinely unsettled point in Idaho. Under the snowmobile rules, highway and public-roadway operation is prohibited with real and useful exceptions: you may cross a highway (other than a controlled-access one) after a complete stop; the prohibition does not apply at all to any highway or public roadway drifted or covered with snow enough that travel by other motor vehicles is impractical or impossible; you may run on the part of the right-of-way not maintained for conventional vehicles; and local authorities may designate specific public roadways as open. Idaho's OHV road rules are considerably more generous (all non-state, non-interstate highways, state highways inside a municipality plus one mile at 60 mph or less, and five-mile connector runs on state highways at 65 mph or less, all capped at 45 mph), but those apply to vehicles that fit the OHV definitions, which a fully tracked machine arguably no longer does.

No person shall operate a snowmobile upon any highway or public roadway in this state, with the following exceptions: (1) Properly numbered snowmobiles may cross, as directly as possible after a full and complete stop, highways and public roadways, except controlled access highways, provided that the crossing can be made in safety and that it does not interfere with the free movement of vehicular traffic approaching from either direction on the highway or public roadway. ... (3) The prohibition against operating snowmobiles upon highways and public roadways shall not apply to any highway or public roadway drifted or covered with snow to an extent that travel on it by other motor vehicles is impractical or impossible. (4) Snowmobiles may be operated on that portion of a highway or public roadway right-of-way that is not maintained or utilized for the operation of conventional motor vehicles. (5) Local authorities may, by ordinance, specifically designate public roadways upon which snowmobiles may be operated.Idaho Code 67-7109 (Snowmobiles—Prohibition against highway operation—Exceptions); compare Idaho Code 49-426(3)-(8) (OHV highway operation) — source · read 2026-09-26

A different document, other jurisdictions
Roads, Shoulders and Crossings separates crossing a road from travelling along one in several named jurisdictions, because most of them do. It settles nothing for Idaho; what Idaho publishes is directly above.

Idaho's registration statute contemplates operation off public highways, on highways located on state or federal lands that are not part of the state highway system, and on the highways described in 49-426(3) and (4). On federal ground the controlling document is the land manager's own travel plan: the Forest Service Motor Vehicle Use Map or Over-Snow Vehicle Use Map for that forest, or the BLM's designations for that field office. Idaho does not impose a statewide statutory trail width limit on ORV use.

Off-highway vehicles may be used on highways located on state lands or federal lands that are not part of the highway system of the state of Idaho, provided the numbering requirements of section 67-7122 or 67-7124, Idaho Code, are met.Idaho Code 49-426(10) — source · read 2026-09-26

A different document, other jurisdictions
Public Land and Width Limits covers the federal land managers, who publish route designations rather than permissions and answer to nobody's state code. It settles nothing for Idaho; what Idaho publishes is directly above.