Afterwards, the Traffic Monitoring Group distributes and publishes traffic data to satisfy the business needs of other ADOT groups, including Roadway Design, Materials, and Motor Carrier Enforcement. The day-to-day field work of traffic data collection is a significant component of a traffic monitoring program.ĭata collected must also run through a series of qualitative analytical checks and reviews before being released. This work is performed through the operation of a statewide network of permanent Automatic Traffic Recorders (ATR’s) and manual collections of several hundred short-term data collection sites. The types of traffic data collected and reported include vehicle volumes, speeds, classifications, and weights. Traffic monitoring activities are mandated by federal law ( 23 CFR Part 500 Subpart B) and are essential functions of ADOT.

The Traffic Monitoring Group is responsible for the collection, analysis, and reporting of vehicular traffic data on State Highway System routes.