Snow zone signs inform motorists about the current requirements for chains and traction tires. Normally, three messages may be displayed on these signs throughout the winter months.
1. Carry Chains or Traction Tires
When signs say you must carry chains or traction tires, the chains or traction tires must be in or on your vehicle, and they must be the right size for your vehicle and of sufficient number to comply with the chain rules.
2. Chains Required on Vehicles Towing or Over 10,000 GVW
When this message is displayed, vehicles towing or rated for more than 10,000 pounds GVW (gross vehicle weight) must use chains.
3. Chains Required-Traction Tires Allowed on Vehicles Under 10,000 GVW
Vehicles towing or rated for 10,000 pounds GVW must use chains. Vehicles weighing 10,000 pounds GVW or less and that are not towing must use chains or traction tires.