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2023 Traffic Volumes [Michigan--Detroit]

Detroit Open Data · 2023 Full Details

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Full Details

Title
2023 Traffic Volumes [Michigan--Detroit]
Description
This dataset contains estimates of the average number of vehicles that used roads throughout the City of Detroit. Each record indicates the Annual Average Daily Traffic (AADT) and Commercial Annual Average Daily Traffic (CAADT) for a road segment, where the road segment is located, and other characteristics. This data is derived from Michigan Department of Transportation's (MDOT) Open Data Portal. SEMCOG was the source for speed limits and number of lanes. The primary measure, Annual Average Daily Traffic (AADT), is the estimated mean daily traffic volume for all types of vehicles. Commercial Annual Average Daily Traffic (CAADT) is the estimated mean daily traffic volume for commercial vehicles, a subset of vehicles included in the AADT. The Route ID is an identifier for each road in Detroit (e.g., Woodward Ave). Routes are divided into segments by features such as cross streets, and Location ID's are used to uniquely identify those segments. Along with traffic volume, each record also states the number of lanes, the posted speed limit, and the type of road (e.g., Trunkline or Ramp) based on the Federal Highway Administration (FHWA) functional classification system. According to MDOT's Traffic Monitoring Program a commercial vehicle would be anything Class 4 and up in the FHWA vehicle classification system. This includes vehicles such as buses, semi-trucks, and personal recreational vehicles (i.e., RVs or campers). Methods used to determine traffic volume vary by site, and may rely on continuous monitoring or estimates based on short-term studies. Approaches to vehicle classification similarly vary, depending on the equipment used at a site, and may consider factors such as vehicle weight and length between axles. For more information, please visit MDOT Traffic Monitoring Program .
Creator
City of Detroit
Publisher
Detroit Open Data
Temporal Coverage
2023
Date Issued
2024-12-16
Access Rights
Public
Format
ArcGIS FeatureLayer
Language
English
Date Added
August 10, 2025
Provenance Statement
The metadata for this resource was last retrieved from Detroit Open Data on 2026-01-08.

Links

Cite and Reference

  • Citation
    City of Detroit (2024). 2023 Traffic Volumes [Michigan--Detroit]. Detroit Open Data. https://data.detroitmi.gov/datasets/detroitmi::2023-traffic-volumes (web service)
  • BTAA Geoportal Link

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