The following is an article we found on thebalance.com written by Holly Schubert. It lists the chain laws you have to know for each state.
States with Required Chain Laws
Arizona, California, Colorado, Idaho, Montana,
New Mexico, Nevada, Oregon, Utah, Vermont, Washington, Wyoming
The use of tire chains shall be permissible upon any vehicle when required for safety because of snow, rain or other conditions tending to cause a vehicle to slide or skid.
Tire chains are not permitted on paved roads from May 1 through September 15 when north of 60 North Latitude.
Tire chains are not permitted on paved roads from April 15 through September 30 when south of 60 North Latitude.
No tire chains are permitted anywhere on Sterling Highway from May 1 through September 15.
Special permits are needed to run tire chains during the typically prohibited dates. These permits may be obtained from the Department of Administration.
Chains are only permissible when necessitated due for safety concerns such as snow, ice or rain that might cause a vehicle to skid or slide.
It shall be permissible to use tire chains of reasonable proportions upon any vehicle when required for safety.
During the winter months, motorists may encounter traction chain controls in the mountain areas within California. When chain controls are established, signs will be posted along the road indicating the type of requirement. There are three requirements in California.
Requirement One (R1): Chains, traction devices or snow tires are required on the drive axle of all vehicles except four-wheel/all-wheel drive vehicles.
Requirement Two (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.
(NOTE: Four wheel/all-wheel drive vehicles must carry traction devices in chain control areas.)
Requirement Three (R3): Chains or traction devices are required on all vehicles, no exceptions.
There are two levels of the chain law affecting commercial motor vehicles.
Level 1 - All single axle combination commercial vehicles chain-up. All four wheels of the power drive axle must be chained. Cables are not allowed on single drive axle combination commercial vehicles as an alternative traction device. When level 1 is in effect, all other commercial vehicles must have snow tires or chains. Level 1 may be implemented at any time there is snow covering any part of the traveled portion of the pavement on an ascending grade.
Level 2 - When this level is enacted, all commercial vehicles are required to chain-up. Cables are not allowed on single drive axle combination units. Level 2 may be implemented any time there is snow covering the entire portion of the pavement on an ascending grade or at the discretion of the highway maintenance supervisor.
Tire chains are permitted for hazardous weather or other related incidents only, but may not damage the highway surface. Tire chains are only permitted betw