Chain Laws By State and Provence
Be sure to check for updates to the regulation.
Unimark does not require and does not want our drivers using chains. Chains are to be carried in states that require them, but the only time chains should be used is to get off the road and to a safe place to park.
The weather is beginning to get a little cooler across the United States and some of the higher elevations are beginning to see snow. That means it’s time to freshen up on the chain laws in the states that you regularly run.
*Denotes states that have laws requiring Drivers to carry chains either way or during specific periods.
Alabama
The use of tire chains shall be permitted upon any vehicle when required for safety because of snow, rain, or other conditions tending to cause a vehicle to slide or skid.
Alaska
You are not permitted to use chains from May 1 through September 15 when north of 60 North Latitude.
You are not permitted to use chains from April 15 through September 30 when south of 60 North Latitude.
If you are operating a vehicle on Sterling Highway, you are not permitted to use chains from May 1 through September 15.
You will need to obtain a special permit from the Department of Administration if you would like to use chains in one of these prohibited zones.
Arizona
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Arkansas
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
California*
California does not require trucks to carry chains during any specified time period. When the weather hits, though, it takes at least eight chains for a standard tractor-trailer configuration to comply with the regulations.
During the winter months, there might be traction chain controls in the mountain areas. When these are established you will see signs posted along the highway. These signs will also include the type of requirement, which will include one of the following:
R1 – Chains, traction devices, or snow tires are required on the drive axle of all vehicles except four-wheel/all-wheel drive vehicles.
R2 – Chains or traction devices are required on all vehicles except four-wheel/all-wheel drive vehicles with snow-tread tires on all four wheels.
R3 – Chains or traction devices are required on all vehicles, with no exceptions.
Colorado*
From September 1 through May 31, all trucks must carry sufficient chains on I-70 when traveling between mile marker 259 outside Golden, CO, and mile marker 133 in Dotsero, CO. If you get stopped and do not have chains on your truck, the fine is $50 plus a surcharge of $16.
If you do not put chains on your truck when the law is in effect, the fine is $500 plus a $78 surcharge. If you do not put chains on and you end up blocking the highway, then the fine will increase to $1,000 plus a $156 surcharge.
Colorado has two different types of chain laws:
Level 1 – Single-axle combination commercial vehicles must chain up. Trucks must have all four drive tires in chains. When level 1 is in effect, all other commercial vehicles must have snow tires or chains.
Level 2 – When level 2 is in effect, all commercial vehicles are required to chain up the four drive tires.
Connecticut
Chains are permitted during hazardous weather from November 15 through April 30. The chains can not be damaging to the highway’s surface.
Delaware
You are permitted to use chains on highways from October 15 through April 15.
Georgia
At any time the Georgia Department of Transportation may close or limit access to certain highways during inclement weather. If this occurs, signage will be placed to inform drivers that chains are required in order to proceed.
For commercial vehicles, chains must be placed on the outermost drive tires.
Idaho
Officials with the Idaho Department of Transportation can determine that it is unsafe to drive over Lookout Pass and Fourth of July Pass on I-90, and Lolo Pass on Highway 12. If it is deemed unsafe, then you will be required to chain up a minimum of one tire on each drive axle and one axle at or near the rear.
Illinois
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Indiana
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Iowa
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Kansas
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Kentucky
No person shall use on a highway not covered with ice a vehicle with a chained wheel unless the wheel rests upon an ice-shoe at least 6 inches wide. When chains are used on rubber-tired vehicles, the cross chains shall be not more than three-fourths (3/4) of an inch in thickness or diameter and shall be spaced not more than ten inches apart, around the circumference of the tires.
Louisiana
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Maine
Vehicles cannot have tires with metal studs, wires, spikes, or other metal protruding from the tire tread from May 1 through Oct. 1. Other than that the use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Maryland
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Massachusetts*
Massachusetts prohibits the use of studded tires and chains between May 1 and Nov. 1 without a permit. The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Michigan
The use of chains is allowed for safety when snow, ice, or other condition are present. If chains are used, they must not come in direct contact with the road’s surface.
Minnesota
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Mississippi
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Missouri
No person shall operate any motor vehicle upon any road or highway of this state between the first day of April and the first day of November while the motor vehicle is equipped with tires containing metal or carbide studs. The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Montana
If the Montana Department of Transportation determines that highways are too dangerous for travel, they may establish the following recommendations on traction devices:
Chains or other approved traction devices recommended for drive wheels
Chains or other approved traction devices required for drive wheels
Chains required for driver wheels
Nebraska
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Nevada*
It is unlawful for any person to operate a motor vehicle, whether it is an emergency vehicle or otherwise, without traction devices, tire chains, or snow tires upon any street or highway, under icy or snowy conditions, when the highway is marked or posted with signs for the requirement of traction devices, chains or snow tires.
If a highway is marked or posted with signs requiring the use of traction devices, tire chains, or snow tires, a motor vehicle or combination of vehicles must be equipped with:
Traction devices, tire chains, or snow tires if it has a gross weight or combined gross weight of 10,000 pounds or less.
Tire chains if it has a gross weight or combined gross weight of more than 10,000 pounds.
New Hampshire
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
New Jersey
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
New Mexico
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
New York*
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
North Carolina
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
North Dakota
North Dakota also allows metal studs within 1/16 inch beyond tread from Oct. 15 through April 15. The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Ohio
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Oklahoma
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Oregon*
Oregon’s law applies to all highways in the state. Signs will tell you when you are required to carry chains and when you are required to use them. You will need to have six chains on hand to comply in Oregon. The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Pennsylvania
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Rhode Island
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
South Carolina
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
South Dakota
The South Dakota DOT has the authority to restrict travel on roads. Signs will alert you to these restrictions. The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Tennessee
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Texas
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Utah
When any designated highway is so restricted no vehicle shall be allowed or permitted the use of the highway, during the period between October 1 and April 30, or when conditions warrant due to adverse, or hazardous weather or roadway conditions, as determined by the Utah Department of Transportation, unless:
An operator of a commercial vehicle with four or more drive wheels, other than a bus, shall affix tire chains to at least four of the drive wheel tires.
Vermont
Vermont has a traffic committee that will decide if the use of chains will be required. The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways. Vehicles with semitrailers or trailers that have a tandem-drive axle towing a trailer shall have chains:
On two tires on each side of the primary drive axle, or if both axles of the vehicle are powered by the driveline, one tire on each side of each drive axle; and
On one tire of the front axle and one tire on one of the rear axles of the trailer.
Virginia
The use of tire chains is allowed when required for safety during a time of snow, ice, or another condition that might cause slippery highways.
Washington*
Any commercial vehicle over 10,000 lbs. Gross vehicle weight rating should carry chains from November 1 to April 1 when driving on one of the following routes:
Blewett Pass – SR-97 between MP 145 and Milepost 185
Chinook Pass – SR-410 Enumclaw (MP 25) to SR-12 (MP 342)
Cle Elum to Teanaway – SR-970 Cle Elum (MP 0) to Teanaway (MP 10)
Gibbons Creek to Intersection of Cliffs Rd.
SR-14 Gibbons Creek (MP 18) to Intersection of Cliffs Rd. (MP 108)
Mt. Baker Highway (Ellensburg to Selah)
SR-542 (MP22) to (MP 57)
I-82 from Ellensburg (MP 3) to Selah (MP 26)
Newhalem to Winthrop – SR-20 Newhalem (MP 120) to Winthrop (MP 192)
Omak to Nespelem – SR-155 Omak (MP 79) to Nespelem (MP 45)
Satus Pass – SR-97 Columbia River (MP 00) to Toppenish (MP 59)
Sherman Pass – SR-20 Tonasket (MP 262) to Kettle Falls (MP 342)
Snoqualmie Pass – I-90 North Bend (MP 32) and Ellensburg (MP 101)
Stevens Pass – SR-2 Dryden (MP 108) to Index (MP 36)
White Pass – SR-12 Packwood (MP 135) to Naches (MP 187)
West Virginia
The use of chains is allowed for safety when snow, ice, or other condition are present. If chains are used, they must not come in direct contact with the road’s surface.
Wisconsin
The use of chains is allowed for safety when snow, ice, or other condition are present. If chains are used, they must not come in direct contact with the road’s surface.
Wyoming*
When the chain law is in effect due to snow, ice, or other conditions, travel on a highway may be restricted to use only by motor vehicles utilizing adequate snow tires or tire chains. There are two levels.
Level 1: When conditions are hazardous, travel can be restricted to vehicles equipped with tire chains, vehicles with adequate snow tires, or all-wheel-drive vehicles.
Level 2: When conditions are extremely hazardous, travel can be restricted to vehicles equipped with tire chains or all-wheel-drive vehicles equipped with adequate mud and snow or all-weather-rated tires.
The operator of a commercial vehicle shall affix tire chains to at least two (2) of the drive wheels of the vehicle at opposite ends of the same drive axle when the vehicle is required to utilize tire chains under this subsection.
Any driver that is in violation will face a fine of no more than $250. If the violation results in the closure of all lanes in one or both directions of a highway, you will face a fine of no more than $750.
Canadian Chain Laws
Contrary to chain laws in some states, most Canadian provinces have “easy-going” policies when it comes to regulating the use of tire chains. Most provinces encourage the use of chains in tough driving conditions, although they typically aren’t required. There are a few exceptions, so take a look at how chains are regulated throughout the provinces.
Alberta
In Alberta, there are no regulations requiring you to use chains, but you are allowed to use them when you think it’s best. But be aware – if you do put them on and you cause damage to the roadway, law enforcement may cite you for the damage.
British Columbia
Between Oct. 1 – April 30, truckers must carry four chains with them to be compliant with British Columbia chain laws. Signs or flashing amber lights will alert drivers when chains are required. And when they are, drivers must install chains on their main drive axle tires. There is no chain requirement for trailer tires.
Certain routes in British Columbia require drivers to carry chains from Oct. 1 – March 31. To view those routes, and more information about chain requirements in British Columbia, visit this page.
Manitoba, New Brunswick, Nova Scotia, Saskatchewan
In these four provinces, there are no laws requiring or prohibiting the use of chains. It’s up to drivers to determine whether or not chains are needed to safely drive in snow or icy conditions.
Newfoundland and Labrador
In Newfoundland and Labrador, drivers are not allowed to operate a vehicle on a highway when there is snow or ice on the surface of the highway unless they have installed chains on their drive axle tires. If you’re caught driving on a highway that has snow or ice without chains, you may be fined up to $400 Canadian.
Ontario
The use of chains is not permitted in Ontario.
Prince Edward Island
Truckers are allowed to use chains on Prince Edward Island when conditions call for the use of them, as long as they don’t “injure” the road. The province doesn’t require the use of them.
Quebec
The only vehicles allowed to use chains in Quebec are emergency vehicles, farm tractors, or any road vehicle used for snow removal or winter maintenance from Oct. 15 to May 1. Even in difficult driving conditions, heavy-duty trucks are not permitted to use chains.
While most Canadian provinces don’t require the use of chains, most allow them to be used when driving conditions are poor. Even though British Columbia is the only major province that requires truckers to use chains when they’re required by law enforcement, it’s still a good idea to have them with you. If you’re driving through snow or ice, it’s nice to have the option to put chains on if driving conditions are bleak, especially if you’re climbing hills or mountain passes.