CDOT Online Transportation Information System
This is the Colorado Department of Transportation’s access point to information frequently used for transportation planning and project development. Information is provided on current and projected traffic volumes, state highway attributes, summary roadway statistics and geographic data.
What's new?
2026 roadway images are now available in Windshield (10/27/2026)--------------------------------------------------
Roadway Reports for 2025 are available under Reports -> Roadway Reports (10/19/2026)
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OTIS has been updated with roadway and traffic data reflecting calendar year 2025 (10/6/2026)
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Latest data updates
MapView
View and query Colorado transportation data and related images and documents. Create customized maps.
Highway Data
View highway characteristics, traffic data, photos and documents. Export reports and data.
Traffic Data
View traffic counts and statistics including AADT, Truck AADT and VMT.
Data Catalog
Search for spatial and tabular data, documents, metadata and glossary terms.
Maps
View and download statewide and regional maps, plus order the official Colorado Travel map.
SL Diagram
Straight Line Diagram displays selected highway characteristics shown as a straight line with a map.
Windshield
Videolog application that plays highway images as if viewed from the windshield of a vehicle.
Reports
Download annual mileage for state highways, city and county roads, truck statistics, and VMT.
Bike & Ped
Query, filter and analyze Bike and Pedestrian traffic counts.
Public Maps & Data
Search, download and visualize CDOT GIS data.
