Annual average daily traffic

Annual average daily traffic (AADT) is a measure used primarily in transportation planning, transportation engineering and retail location selection. Traditionally, it is the total volume of vehicle traffic of a highway or road for a year divided by 365 days. AADT is a simple, but useful, measurement of how busy the road is.

AADT is the standard measurement for vehicle traffic load on a section of road, and the basis for some decisions regarding transport planning, or the environmental hazards of pollution related to road transport.

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