Driving through Colorado’s I-70 in winter demands full awareness of the truck chain law. When the chain law is activated, commercial vehicles must have chains on their drive tires for traction. Truck drivers who ignore this requirement risk expensive citations and driving bans. The fines can reach $1,000 or more if the vehicle blocks traffic. CDOT sets up chain-up stations at key points like Georgetown and Silverthorne to make compliance easier. Knowing the law and preparing ahead ensures smooth travel through snow and steep mountain grades.