|Snowy Roads?||Level 1||Level 2||Level 3|
|CA Statement||“R-1” or “Chains Required, Except For…”||“R-2” – “Chains or Snow Tires Required”||“R-3” – “Chains Mandatory”|
|CA Definition||Chains Required, Except For: Cars and light trucks < 6,000 GVW must have mud-snow (M-S) tires on driving wheels. Motorists are advised to carry chains. Vehicles > 6,000 GVW must use chains on drive wheels.||Chains required on all vehicles, except four-wheel-drives or all-wheel-drives with snow tread tires on all four wheels. All-wheel-drive and four-wheel-drive vehicles must carry chains.||Chains required on ALL VEHICLES without exception.|
|NV Statement||*(CA Only)||“Chains or Snow Tires Required”||“Chains Mandatory”|
|NV Definition||*(CA Only)||Vehicles < 10,000 GVW are required to use snow tires or approved traction devices. Vehicles > 10,000 GVW must use chains on driving wheels and braking wheels of trailer. Four-wheel-drive OK with four mud-snow (M-S) tires.||Chains required on all vehicles, except four-wheel-drive with four mud-snow (M-S) tires.|
|Definition of “Approved Traction Devices” (Chains and alternative traction devices):Made of steel or plastic; have cross ribs with at least one link under tire tread while in motion; connecting rings on both sides of tire.
“Alternative Traction Devices”: Nevada recently approved use of alternative traction devices consisting of durable traction-enhancing fabric or plastic encompassing the circumference of a tire tread and secured to both sides of the wheel.