Annual Average Daily Traffic, Traffic Segments, Minnesota

This dataset represents the most current AADT (Annual Average Daily Traffic) on sampled road systems in a particular given year. AADT is a theoretical estimate of the total number of vehicles using a specific segment of roadway (in both directions) on any given day of the year. This estimate represents the total number of cars per year divided by 365 and is developed using factors that adjust for season, day of the week, and vehicle type. This information is displayed using the road centerlines within the state. This centerline layer is a subset of the State of Minnesota BaseMap which consists of a number of individual data layers originally digitized from USGS 7.5-minute quadrangles, but later updated via aerial imagery and local input.

Additional Info

Field Value
Last Updated May 1, 2019, 10:03
Created November 12, 2014, 15:17
dsAccessConst None
dsCurrentRef Year in which the most recent count data was collected.
dsModifiedDate 2019-05-01 00:09:16
dsOriginator Minnesota Department of Transportation/Office of Transportation Systems Management/Traffic Forecasting and Analysis Section
dsPurpose Determine general estimates of location-specific, annual average daily traffic (AADT) on the entire trunk highway system every two years to support the department's activities to facilitate passenger vehicle, bus and commercial truck travel. Determine general estimates of location-specific AADT for all county state aid highways (CSAH), other county roads (CR) and municipal state aid system (MSAS) roadways to assist in the annual allocation of state aid to local government for roadway maintenance and construction. Counts are taken on portions of this system each year so complete coverage for a given jurisdiction is accomplished on a two or four year cycle. More information about the Traffic Volume Program can be found at:

Dataset extent