Chain Law Information


WInter driving conditions can be expected in the Colorado High Country as early as September and as late as May.  Travelers must be prepared to drive safely at all times and in all conditions.  Click here to view a winter driving guide to help you safely navigate our beautiful mountain roads during these winter months.

Colorado's Chain Law:

Colorado's Chain Law is not just for Large Commercial Vehicles.  All vehicles need to be prepared to have adequate tires and equipment when traveling in Colorado during the winter.  Chain Law and safe tire requirements can be put into effect at anytime for all types of vehicles.  These requirements have recently changed.  Click here to view the rules which are currently in effect by the Colorado Department of Transportation as of November 2019.
At all times, from the beginning of September till the end of May -

Commercial vehicles operating on I-70 in either direction between milepost 133 (Dotsero) and milepost 259 (Morrison) must carry sufficient chains (traction devices) for the type of vehicle being driven to be in compliance with the chain law requirements should they go into effect (see video below).

Penalty for non-compliance: $50.00 fine plus a $17.00 surcharge

When chain law has been put into effect for your type of vehicle - 

Vehicles with a gross combined weight rating of 16,001 lbs or more are required to have 4 or more drive wheels covered with an appropriate traction device. Vehicles with less than 4 drive wheels must have all drive wheels covered with an appropriate traction device.  

Penalty for non-compliance: $500.00 fine plus a $79.00 surcharge or, if you are stuck and blocking any traveled portion of the roadway the fine is $1,000.00 plus a $157.00 surcharge