Colorado Road Traffic Counts With Pavement Condition Metrics

Annual Average Daily Traffic (AADT) figures for local roads are paired with pavement condition indices like IRI and PSI. The Colorado Department of Transportation (CDOT) provides this data for public roads under local jurisdiction, covering the 2023 measurement year.

Use Cases

• Correlate Annual Average Daily Traffic (AADT) with pavement roughness (IRI) and Present Serviceability Index (PSI) to model road wear.
• Analyze traffic volume distribution by road Functional Class (FuncClassID) and National Highway System designation (NHSDesig).
• Map traffic counts using geospatial fields (GISID, SegMid) and segment lengths (Seg_Length) for regional planning.
• Assess infrastructure age by comparing construction year (BuiltYR) with current traffic load (AADT).
• Segment analysis by surface type (Surf_Type) and width (SurfWd) to study traffic patterns on different road materials.

Strengths

• Includes 30 distinct columns covering traffic, road attributes, and pavement condition.
• Provides geospatial identifiers (GISID, SegMid) for mapping integration.
• Contains specific pavement quality metrics (IRI, PSI) alongside traffic volume.

Limitations

• Unknown total row count prevents assessment of spatial coverage completeness.
• Data is limited to a single year (2023), preventing longitudinal trend analysis.
• Sample data unavailable to verify data consistency and null value prevalence.

Provenance

Source

Colorado Department of Transportation (CDOT) via data.colorado.gov.

Collection Method

Traffic counts and pavement condition assessments on public roads under local jurisdiction.

Time Range

2023

Freshness

Updated in April 2026, but data reflects 2023 measurements.

Geography

Colorado, USA.