Congestion measurements are defined by travel-time delay, which is the difference between the travel time on highways at the free flow speed and the time spent in current traffic. In 2012, the average travel-time delay on all congested corridors was 17.2 minutes per traveler, per day. A highway is considered congested when the peak traffic volume is 85 percent or greater than what the highway was designed to sustain.

Public roads under local (city/county) jurisdiction that are functionally identified as local. Does not contain major roads or highways. Contains data on size of road, length, type, etc. Fields include average daily traffic counts, locations of count stations, if it is congested, if maintenance is under shared jurisdiction and the year it was built or last updated, political jurisdictions, and more.

Local Roads are functionally identified as local and excludes major roads or highways. Each road is segmented with a to and from description. The direction, length, type (paved/dirt), width (in feet), local route name and id, number of lanes, one/two-way bridges, average daily traffic counts, locations of count stations, if it is congested, if maintenance is under shared jurisdiction and the year it was built or last updated from the Colorado Department of Transportation (CDOT).

Public roads under local (city/county) jurisdiction that are functionally identified as local. Does not contain major roads or highways. Contains data on size of road, length, type, etc. Fields include average daily traffic counts, locations of count stations, if it is congested, if maintenance is under shared jurisdiction and the year it was built or last updated, political jurisdictions, and more.

All public road locations that are not in local roads, from the Colorado Department of Transportation (CDOT). The location of all major roads, does not contain local roads or highways. Contains data on size of road, type, length, etc.

Public roads under local (city/county) jurisdiction that are functionally identified as local. Does not contain major roads or highways. Contains data on size of road, length, type, etc. Fields include average daily traffic counts, locations of count stations, if it is congested, if maintenance is under shared jurisdiction and the year it was built or last updated, political jurisdictions, and more.

Local Roads are functionally identified as local and excludes major roads or highways. Each road is segmented with a to and from description. The direction, length, type (paved/dirt), width (in feet), local route name and id, number of lanes, one/two-way bridges, average daily traffic counts, locations of count stations, if it is congested, if maintenance is under shared jurisdiction and the year it was built or last updated from the Colorado Department of Transportation (CDOT).