Truck Tire Chain Laws by State: 2026 Commercial Vehicle Guide
Last reviewed and updated: September 9, 2026
Truck tire chain laws vary by state, vehicle weight, highway, weather conditions, and posted chain controls. A route that is open to commercial traffic under normal conditions can quickly become subject to traction requirements when snow, ice, or mountain weather develops.
Commercial drivers and transportation teams should not rely on a general chain law guide alone. Always check current state DOT or 511 information before entering winter conditions and follow roadside signs, law enforcement instructions, permit restrictions, and active chain-control requirements.
For Buchanan Hauling & Rigging, Inc., winter planning can be especially important when moving heavy haul freight, open-deck equipment, oversized loads, or other shipments whose route or permit conditions may be affected by winter restrictions.
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What Drivers Should Do Before Entering a Chain-Control Area
- Check current DOT or 511 conditions: Chain-control levels can change while a truck is already en route.
- Verify the route: Mountain passes and designated winter corridors may have rules that differ from other highways in the same state.
- Carry the correct chains: Confirm that the number, size, and type of chains match the tractor, trailer, axle configuration, and state requirements.
- Inspect chains before departure: Look for damaged links, hooks, fasteners, or other components that could prevent proper installation.
- Know the required axle placement: Commercial vehicle rules may specify which drive and trailer tires must be chained.
- Watch roadside signs: Posted chain controls and law enforcement instructions take precedence over a general reference guide.
- Review oversize permit restrictions: Oversized or overweight freight may be prohibited from moving when certain winter restrictions are active.
- Use designated chain-up areas when available: Do not stop in a travel lane to install or remove chains.
Why Chain Laws Matter for Commercial Freight
Chain laws are not limited to passenger vehicles. Commercial trucks can face additional carry requirements, axle-placement rules, route restrictions, and penalties when traction controls are active. Those requirements can also affect pickup schedules, delivery appointments, permit windows, and the routes available to oversized freight.
For heavy haul transportation, winter restrictions can create an additional planning issue because permitted oversize movements may be restricted or temporarily prohibited when chain controls are posted. Transportation teams should check both the chain requirement and the conditions of the oversize or overweight permit before departure.
State-by-State Truck Tire Chain Law Reference
The summaries below are intended for transportation planning. They do not replace current statutes, DOT instructions, 511 alerts, posted chain controls, permit conditions, or law enforcement directions.
- Alabama: Tire chains of reasonable proportion may be used when required for safety because of snow, rain, or other conditions that could cause a vehicle to slide or skid. ```
- Alaska: Chain use can be ordered on specific roads when snow or ice makes chains necessary. Alaska also places seasonal restrictions on operating with chains attached to tires on paved roads, subject to emergency orders and other exceptions. Check Alaska DOT&PF and Alaska 511 before travel.
- Arizona: Tire chains may be used when snow, ice, or similar conditions make additional traction necessary. Check current ADOT and Arizona 511 conditions before entering higher-elevation winter routes.
- Arkansas: Tire chains of reasonable proportion may be used when required for safety because of snow, ice, or similar conditions.
- California: California does not use a fixed annual chain season. Caltrans activates R1, R2, or R3 chain controls when conditions require them. Heavy-duty commercial vehicles over 6,500 pounds must install chains when chain controls require them, even when equipped with snow tires. Follow the current Caltrans Truck Chain Requirements.
- Colorado: Colorado's commercial vehicle Must Carry Law applies from September 1 through May 31 on designated mountain highways. Qualifying commercial vehicles must carry sufficient chains or approved traction equipment on covered routes, and additional chain-up requirements can be activated during winter conditions. Review current Colorado commercial vehicle information before entering mountain corridors.
- Connecticut: Chains and other nonskid devices are subject to Connecticut equipment and roadway rules. Drivers should check CTroads and current Connecticut DOT information during snow and ice events.
- Delaware: Tire chains of reasonable proportion may be used when needed for safety during snow, ice, or slippery road conditions.
- Florida: Florida does not have a routine statewide commercial chain-control program. Equipment used for traction must comply with state rules intended to prevent damage to paved road surfaces.
- Georgia: During a declared winter weather emergency, roads may be posted for limited access. Commercial motor vehicles using a restricted road must place chains on each outermost drive-wheel tire when required. Review current Georgia road restrictions before travel.
- Hawaii: Ordinary detachable tire chains may be used subject to state equipment rules, but Hawaii does not operate a routine statewide commercial winter chain-control program.
- Idaho: Mountain highways may display chain advisories or other winter travel warnings when conditions become hazardous. Check Idaho 511 for current road conditions before entering mountain routes.
- Illinois: Tire chains of reasonable proportion may be used when required for safety because of snow, ice, or similar conditions.
- Indiana: Tire chains of reasonable proportion may be used when required for safety because of snow, ice, or similar road conditions.
- Iowa: Tire chains of reasonable proportion may be used when required for safety because of snow, ice, or other conditions that could cause skidding.
- Kansas: Tire chains of reasonable proportion may be used when needed for safety because of snow, ice, or similar slippery-road conditions.
- Kentucky: Kentucky permits tire chains but regulates chain construction, including cross-chain dimensions and spacing. Drivers should verify the current Kentucky Transportation Cabinet requirements before use.
- Louisiana: Tire chains of reasonable proportion may be used when required for safety because of conditions that could cause a vehicle to skid.
- Maine: Tire chains may be used when winter conditions require additional traction, provided their use complies with state equipment and roadway requirements. Studded tire dates are separate from chain requirements.
- Maryland: Tire chains of reasonable proportion may be used when required for safety because of snow, ice, or similar conditions. Emergency and posted restrictions may also apply.
- Massachusetts: Chains may be used when road conditions warrant, subject to roadway and equipment restrictions. Do not confuse Massachusetts' seasonal studded-tire rules with a fixed commercial chain season.
- Michigan: Tire chains may be used when required for safety, but their use must comply with state rules intended to prevent unnecessary damage to the roadway.
- Minnesota: Tire chains of reasonable proportion may be used when required for safety because of snow, ice, or skidding conditions.
- Mississippi: Tire chains may be used when required for safety because of snow, ice, or similar conditions. Check Mississippi DOT traffic information during winter events.
- Missouri: Tire chains may be used when conditions require them for safety. Seasonal restrictions on studded tires are separate from chain requirements.
- Montana: Montana DOT may require chains in designated areas when conditions are dangerous. From October 1 through April 30, towing units with a GVW of 26,001 pounds or more must carry chains or an approved traction device when traveling in areas where chains may be required. See the current Montana Tire and Chain Laws.
- Nebraska: Tire chains may be used for safety during snow or ice conditions. Seasonal rules applying to metal studs are separate from chain requirements.
- Nevada: Nevada uses posted traction and chain requirements. When "Chains or Snow Tires Required" is active, vehicles over 10,000 pounds GVW must use chains on driving wheels and on braking wheels of the trailer. Check current Nevada traction and chain requirements.
- New Hampshire: Tire chains may be used when hazardous winter conditions warrant them, provided they are used in accordance with state roadway requirements.
- New Jersey: Tire chains of reasonable proportion may be used when roads are slippery and additional traction is necessary. Chains should not be used unnecessarily on clear pavement.
- New Mexico: Tire chains of reasonable proportion may be used when required for safety because of snow, ice, or similar conditions.
- New York: Chains may be used when hazardous weather, snow emergencies, or posted restrictions warrant them. New York may also impose temporary commercial vehicle restrictions during major winter storms, so check 511NY before departure.
- North Carolina: Tire chains of reasonable proportion may be used for safety during snow and ice conditions.
- North Dakota: Tire chains may be used when needed for winter safety. Seasonal studded-tire dates are separate from chain requirements.
- Ohio: Tire chains may be used when snow or ice conditions warrant them. Seasonal rules for studded tires should not be treated as a commercial chain carry requirement.
- Oklahoma: Tire chains of reasonable proportion may be used when needed for safety, subject to state equipment requirements.
- Oregon: Oregon does not have a fixed annual chain season. Chains must be carried or installed when posted signs require them. Commercial vehicle chain placement depends on vehicle and trailer configuration. Review the current Oregon commercial chain requirements.
- Pennsylvania: Tire chains may be used temporarily during snow or ice emergencies when they meet Pennsylvania requirements. PennDOT may also impose vehicle restrictions during severe winter events.
- Rhode Island: Tire chains of reasonable proportion may be used for safety in slippery conditions. Studded-tire seasons are separate from chain requirements.
- South Carolina: Tire chains of reasonable proportion may be used when required for safety because of snow, ice, or similar conditions.
- South Dakota: Tire chains of reasonable proportion may be used when required for safety. State transportation officials may also impose temporary winter travel restrictions.
- Tennessee: Tire chains of reasonable proportion may be used when required for safety because of snow, ice, or similar conditions.
- Texas: Tire chains and traction devices may be used when conditions warrant, provided their use complies with state roadway equipment requirements.
- Utah: Utah activates traction-device requirements when severe winter conditions warrant them. Vehicles over 12,000 pounds GVWR must use qualifying traction devices on all drive tires when the applicable traction requirement is active. For dual tires, the state allows the required device on one tire in the dual mounting. Review current UDOT traction requirements.
- Vermont: Vermont may require tire chains or qualifying winter tires on posted highway segments when winter conditions warrant them, including requirements affecting trucks and buses.
- Virginia: Tire chains may be used when required for safety. Studded tires and other traction equipment are subject to separate state restrictions.
- Washington: Vehicles over 10,000 pounds GVW are subject to specific commercial chain requirements. On designated routes, chains must be carried from November 1 through April 1 regardless of current road conditions, and qualifying vehicles must also carry at least two extra chains. Follow current WSDOT commercial chain requirements.
- West Virginia: Tire chains may be used when needed for safety. Studded tire rules and specifications are separate from chain requirements.
- Wisconsin: Tire chains of reasonable proportion may be used when required for safety because of snow, ice, or conditions that may cause skidding.
- Wyoming: Wyoming activates Level 1 and Level 2 chain-law restrictions when highway conditions warrant. Under Level 2, commercial vehicles must have chains on at least two drive wheels at opposite ends of the same drive axle. Review the current Wyoming Chain Law. ```
States with Major Commercial Truck Chain Requirements
Long-distance commercial drivers should pay particular attention to western mountain states, where commercial chain rules are more likely to include fixed carry periods, specific axle requirements, designated chain-up areas, or active traction-control levels.
- Colorado: Commercial chain carry requirements apply from September 1 through May 31 on designated mountain highways.
- Washington: Vehicles over 10,000 pounds must carry chains on designated routes from November 1 through April 1, with additional commercial vehicle chain requirements.
- Montana: Certain towing units must carry chains or an approved traction device from October 1 through April 30 when traveling in areas where chains may be required.
- California: No fixed annual chain season. Caltrans activates R1, R2, or R3 requirements based on current conditions.
- Oregon: No fixed annual chain season. Posted snow-zone signs determine when chains must be carried or installed.
- Nevada: Posted chain and traction levels determine requirements, including specific rules for vehicles over 10,000 pounds.
- Utah: Traction requirements are activated according to weather and road conditions, with specific rules for vehicles over 12,000 pounds.
- Wyoming: Level 1 and Level 2 restrictions may be activated on designated highway sections when conditions become hazardous.
Because conditions can change during a trip, drivers should check live road information immediately before entering mountain corridors rather than relying only on a seasonal calendar.
Chain Laws and Oversize or Heavy Haul Freight
Oversized and overweight loads can face an additional restriction that standard commercial freight does not. Some states limit or prohibit permitted oversize movements when traction advisories or chain controls are active.
Washington, for example, restricts certain permitted oversize movements when specific winter traction signs are displayed. Heavy haul teams should therefore check both the general chain law and the conditions attached to the load's permit before moving into severe winter weather.
Buchanan's Heavy Haul Permits and Route Planning guide explains how route restrictions, clearances, permits, and changing road conditions can affect oversized freight transportation.
How Buchanan Plans Freight Around Winter Conditions
Buchanan Hauling & Rigging operates more than 200 power units and more than 900 trailers supporting dry van, flatbed, expedited, specialized, and heavy haul transportation. Winter freight planning can require reviewing road conditions, equipment requirements, shipment timing, permit restrictions, and alternate routing before a load moves.
No carrier can control the weather or guarantee that a winter route will remain open. The goal is to identify known requirements early, monitor changing conditions, communicate when a restriction affects the transportation plan, and adjust when necessary.
Learn more about Buchanan's freight transportation services or our heavy haul trucking capabilities.
Official Chain Law and Winter Travel Resources
The following government resources should be checked for current commercial chain requirements and active winter restrictions:
- Alaska Department of Transportation & Public Facilities
- California Department of Transportation Truck Chain Requirements
- Colorado Department of Transportation Commercial Vehicle Information
- Montana Department of Transportation Tire and Chain Laws
- Nevada Department of Transportation Traction and Chain Requirements
- Oregon Department of Transportation Commercial Chain Requirements
- Utah Department of Transportation Traction Requirements
- Washington State Department of Transportation Commercial Chain Requirements
- Wyoming Department of Transportation Chain Law
This guide is provided for general transportation planning and is not legal advice. Chain laws, traction-device requirements, seasonal dates, route restrictions, and emergency orders can change. Always verify the current requirements with the appropriate state transportation authority before travel.
Planning Freight Through Winter Routes
Winter transportation planning should account for more than the forecast. Route-specific chain laws, commercial vehicle rules, permit restrictions, equipment availability, and changing road conditions can all affect how and when freight moves.
If your shipment requires dry van, flatbed, specialized, expedited, or heavy haul transportation, provide Buchanan with the origin, destination, freight dimensions and weight, required dates, and any special loading requirements so the transportation team can review the move.
Need help planning a freight shipment through winter conditions?
Related Buchanan Freight Resources
Heavy Haul Permits and Route Planning | Winter Logistics Season Tips | Ensuring Effective Load Securement | Heavy Haul Trucking Services | Buchanan Freight Transportation Services
