Truckers traveling across the Rocky Mountains must pay attention to the Colorado I-70 chain law to avoid steep fines. Citations are often issued when commercial vehicles fail to equip tire chains during active chain law alerts. A $500 fine is applied for not carrying chains and $1,000 for blocking the roadway due to lack of proper traction. The Colorado Department of Transportation (CDOT) strictly enforces this rule during the winter season. To prevent citations, truck drivers should monitor CDOT alerts, carry proper chain sets, and know designated chain-up stations along the I-70 corridor. Staying informed helps ensure safety and compliance on one of the most challenging highways in the US