Road attributes including number of lanes, surface type, roughness factor, etc since 1970 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.

Highway curvature and gradient data in sections across Colorado since 1998. Contains detailed data on selected roadways, including rigidity, flexibility, curvature, grade, sight distance, speed limits, length of green time, etc from the Colorado Department of Transportation (CDOT).

CDOT provides a wealth of useful traffic-related data through its XML data feeds. Find out more about this high-valuable resource by clicking on the External Link HTM button.

Segment lengths and route identifiers for all routes in Colorado. CDOT defines routes by the number designating the State Route, including a section identifier designated by a letter for the State database.

The mile points for every interstate highway in Colorado, from the Colorado Department of Transporation

High Occupancy Vehicle and restricted driving lanes in the state of Colorado from the Colorado Department of Transportation (CDOT).

Noxious weeds found in the state of Colorado along roadways during 2012, from the Colorado Department of Transportation (CDOT).

Passengers took almost 120 million trips in 2012 on Colorado’s public transportation vehicles, which include buses, light rail and vehicles used by services that transport disabled people. A trip is counted each time a passenger boards a vehicle, no matter how many vehicles the passenger takes to reach a destination.

Traffic counts on public roads under local jurisdiction in 2018. Provided by the CDOT.