Riding a Montana-Plated Machine on a Black Hills Road
A Montana plate can make an off-highway vehicle eligible for street use in South Dakota, but it does not automatically authorize every ride in the Black Hills. The key is to distinguish public-road legality from forest-road and motorized-trail rules. Here’s how to check whether your machine qualifies, when a permit is needed, and what to verify before you unload.
Start by separating road legality from trail access
A plate answers only part of the question. It may help establish that your machine is street legal, but it does not make every road or trail open to it, and it does not necessarily replace a permit required for a particular area.
According to the South Dakota Department of Revenue, an out-of-state off-highway vehicle needs a hard license plate issued by its home state’s DMV to be street legal in South Dakota. A temporary paper document or a decal is not the hard plate described by the department. If your Montana machine has a plate, check that it is valid under Montana’s requirements and belongs to that vehicle. For the broader state rules, see Riding South Dakota With an Out-of-State Plate and Does South Dakota Honor Out-of-State Registration?.
Engine classification matters too. According to the South Dakota Department of Revenue, a four-wheeled OHV must have a minimum engine classification of 200 cc to be street legal, while a two-wheeled OHV must have a minimum classification of 120 cc. The department also says electric four-wheeled OHVs can meet the street-legal engine classification requirement. A plate alone does not erase these criteria.
Even if your vehicle meets those conditions, don’t treat “street legal” as permission to ride on any road. A public road may have its own restrictions, and a route in the Black Hills National Forest may be open to some vehicle types but not others. Check the route’s current designation before setting out. The South Dakota Rules for Riding Federal Land and South Dakota Trail Maps and MVUMs can help you understand what to verify.
The practical distinction looks like this:
| Where you want to ride | What a Montana plate means | What else to check |
|---|---|---|
| A public road | A hard plate issued by the home-state DMV is part of the South Dakota street-legal requirement, according to the South Dakota Department of Revenue. | Confirm the machine meets the applicable engine classification and that the particular road allows it. |
| A Black Hills National Forest road designated Open to All Vehicles | A valid state plate means a Forest Service motorized trail permit is not needed for that road, according to the Forest Service. | Confirm the road is actually designated Open to All Vehicles on the official map. |
| A designated motorized trail in the Black Hills National Forest | A plate does not remove the trail-permit requirement, according to the Forest Service. | Get the required Motorized Trail Permit and check the trail’s status. |
| A designated OHV area managed by South Dakota Game, Fish, and Parks | A vehicle license is not required inside a designated OHV area, according to South Dakota Game, Fish, and Parks. | Stay within the area’s designated riding boundaries and check its rules. |
This table is a starting point, not a substitute for checking the specific route. A road and a motorized trail can have different rules even when they are close together. The Forest Service’s Motor Vehicle Use Map is the official map for identifying roads, trails, and areas open to public motorized travel on the National Forest. Use that map rather than relying only on a GPS route, an old paper map, or a trail description from another rider.
Understand the permits before heading into the forest
The Black Hills National Forest has its own motorized trail permit system. According to the Forest Service, a permit is required for motor vehicles on motorized-use trails in the forest. The Forest Service also states that vehicles with a valid state license plate do not need a permit on forest roads unless they are driving on a designated motorized trail.
That means a Montana plate can matter on an eligible forest road, but it does not serve as a trail permit. If your plan includes a designated motorized trail, arrange the permit even if the vehicle is plated. For a fuller explanation of what the permit covers, see How the Black Hills Motorized Trail Permit Works and Why a Plate Does Not Replace a Trail Permit.
The South Dakota nonresident off-road vehicle permit is a separate consideration. According to the South Dakota Department of Revenue, nonresident OHV permits are valid for one year. The department lists the permit cost as $50 as of November 2026, with an additional $2.50 mailing fee when decals are mailed. South Dakota residents cannot buy the nonresident decal.
Applicants for the annual nonresident permit must provide a copy of their driver’s license and proof of their Social Security Number, according to the South Dakota Department of Revenue. The permit decal must be placed on the rear of the OHV in an easily visible location, and the expiration sticker must be placed on the decal for it to be valid. If applying online, submit the application at least two weeks before the planned trip, as the department advises.
These state permit details should not be confused with the Forest Service trail permit. They come from different agencies and address different requirements. Before you ride, check which permits apply to your vehicle and destination instead of assuming that one decal covers every kind of public riding. What a South Dakota Nonresident Permit Requires and What South Dakota Charges Visitors to Ride cover the state permit side in more detail.
The Forest Service says a Motorized Trail Permit can be purchased from Black Hills National Forest offices, local vendors, online, or the visitor center. Vendor locations include the Black Hills Visitor Information Center in Rapid City, Ace Hardware in Rapid City, Big D Oil in Sturgis, and Elkhorn Ridge Travel Center in Spearfish. Check with the Forest Service or vendor before making a special trip, since availability and purchasing arrangements can change.
The Forest Service says permit sales support maintenance of the forest’s motorized trail system. Keep the permit displayed as required and carry or save any purchase information that helps you confirm you have the right permit. Do not assume that a permit for one state or riding area substitutes for another agency’s requirement.
Match your route to the right land manager
“Black Hills road” can mean a public road, a Forest Service road, a motorized trail, a designated OHV area, or a road inside a park or campground. Those settings do not all share the same rules. Before you ride, identify who manages the route and whether it is open to your type of machine.
For Forest Service land, check the Motor Vehicle Use Map and the current route designation. The Forest Service describes the map as the official map for roads, trails, and areas available for public motorized travel on the National Forest. The Black Hills offers over 3,800 miles of roads and trails for motorized vehicles, according to the Forest Service, but that does not mean all of them are open to every vehicle or rider. The Forest Service also identifies over 700 miles of system trails for OHVs that are available with a valid Motorized Trail Permit.
A map can help you tell an open forest road from a designated motorized trail. That difference is important for a plated Montana machine: according to the Forest Service, a valid state plate removes the permit requirement on forest roads unless you use a designated motorized trail. When the route changes from road to trail, the permit rule can change with it. Follow posted signs and do not continue onto a route simply because it connects to a road you were allowed to use.
South Dakota’s designated OHV areas have a different framework. According to South Dakota Game, Fish, and Parks, vehicles inside designated OHV areas do not require a vehicle license or a park entrance license. The agency also says riding is restricted to designated areas only at the Oahe Downstream Off-highway Area, which has nearly 400 acres of terrain. The Revheim Bay Off-highway Vehicle Area features a 1.1-mile track, according to South Dakota Game, Fish, and Parks.
Those area-specific exceptions do not necessarily apply to travel outside the marked OHV area. South Dakota Game, Fish, and Parks says off-road vehicles operated in parks or campgrounds must have a South Dakota license and a park entrance license, and operators must hold a valid driver’s license. If you plan to ride through a park or campground rather than remain inside a designated OHV area, check the requirements for that location before you go.
Other land-use restrictions can affect your trip, too. South Dakota Game, Fish, and Parks says OHVs are prohibited from snowmobile trails during the snowmobile season. The agency also says snowmobiles are allowed in OHV areas exclusively during the designated snowmobile season. A permit does not make a closed route available, and a route shown on a map may have seasonal or temporary restrictions. Check current closures and signs near the trailhead.
For Forest Service trips, the Forest Service says the Motor Vehicle Use Map is available free to the public from local Forest Service offices, local vendors, and online. The map is more reliable for route designations than a general road map. If you are uncertain whether your planned route is an open road or a motorized trail, ask the relevant Forest Service office before riding. Where to Buy a Black Hills Trail Permit can help with permit planning, while South Dakota Trail Closures to Check First is useful when conditions may have changed.
A practical check before you unload
A little preparation can prevent a frustrating turn-around or an avoidable violation. Use this sequence for a Montana-plated ATV or UTV:
- Check the plate and machine. Confirm that the vehicle has a hard plate issued by Montana’s DMV and that it meets South Dakota’s applicable street-legal engine classification. The South Dakota Department of Revenue sets the classification requirements; it does not follow from the plate alone that every vehicle qualifies.
- Identify the land manager. Determine whether the planned ride is on a public road, Forest Service land, a state-managed OHV area, or a park or campground. The responsible agency affects which rules apply.
- Confirm the route designation. On Forest Service land, use the Motor Vehicle Use Map to determine whether each segment is an open road or a designated motorized trail. Check for closures and posted restrictions, too.
- Check the permit requirements for that route. A valid state plate can remove the Forest Service permit requirement on a forest road, but not on a designated motorized trail. Separately review whether the South Dakota nonresident permit applies to your planned use.
- Plan permit timing and display. If you need a state nonresident permit and are applying online, the South Dakota Department of Revenue advises submitting the application at least two weeks before travel. Put the required decal and expiration sticker in the specified visible location.
- Keep the ride within the permitted area. A trail permit or OHV-area access does not authorize riding beyond the routes or boundaries designated for motorized use.
The central takeaway is simple: a Montana plate may satisfy an important part of South Dakota’s street-legal requirement, but it is not a universal pass for the Black Hills. On a Forest Service road, the route designation and valid state plate determine whether a motorized trail permit is needed. On a designated motorized trail, the Forest Service permit is still required. On a park road, campground, or designated OHV area, check that land manager’s rules separately.
If your trip crosses jurisdictions or includes both roads and trails, check each part of the route rather than treating the whole ride as one category. For additional background, see Riding South Dakota With an Out-of-State Plate, Do You Need a Permit on a Black Hills Road?, and Do You Need a Permit on a Black Hills Trail?.
Sources
- South Dakota Department of Revenue — Off-Road Vehicles | South Dakota Department of Revenue (checked November 3, 2026)
- South Dakota Game, Fish, and Parks — ATVs & Off-Highway Vehicles | South Dakota Game, Fish, and Parks (checked November 3, 2026)
- USDA Forest Service — Black Hills National Forest | OHV Information | Forest Service (checked November 3, 2026)
- Forest Service — Black Hills National Forest | Off-Highway Vehicles (OHV) | Forest Service (checked November 3, 2026)
Disclaimer
This article is for general informational purposes only and does not constitute professional advice. Laws, prices and regulations vary by location and change over time. Consult a qualified professional for guidance on your specific situation.
