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What is ADT?
ADT stands for Average Daily Traffic. This is the number of vehicles that you would expect to travel a particular roadway on any single day. Some counts may be for one direction only, such as where a road has been divided by a median. These are typically denoted with a SB (southbound) or NB (northbound) label. Traffic may be higher or lower than this number on a given day, depending on a number of factors such as time of year.

AADT stands for Average Annual Daily Traffic. This type of count determines the average daily traffic of a location based on data collected over the course of an entire year.

ATRC Traffic Counts

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1. Why are Traffic Counts important?
2. What is ADT?
3. How often are traffic counts completed?
4. How do I ask for other traffic count information that is not shown?