The Annual Average Daily Traffic (AADT) is the estimated mean daily traffic volume and theCommercial Annual Average Daily Traffic (CAADT) is the estimated mean daily traffic volume for commercialvehicles.Data DictionaryData Quality:For continuous sites, estimates are calculated by summing the Annual Average Days of the Week and dividing by seven. For short-count sites, estimates are made by factoring a short count using seasonal and day-of-week adjustment factors.Data Coverage:The dataset covers the entire State of Michigan (state-owned) Trunkline system.Update Cycle:AADT & CAADT volumes are created and released every year.Contact:Kevin Krzeminski
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