ADOT installs new sensors to help track freeway traffic flow

Arizona Department of Transportation (ADOT) is installing new in-road sensors along the state’s freeways to monitor traffic flow in an effort to reduce congestion. The sensors provide the data used to estimate the travel times that that are displayed on message boards above freeways. The data also helps ADOT and the Maricopa Association of Governments, the regional transportation-planning agency make decisions about future freeway improvements. Using electronic wires embedded in the road, the sensors have b
May 19, 2017 Read time: 1 min
6576 Arizona Department of Transportation (ADOT) is installing new in-road sensors along the state’s freeways to monitor traffic flow in an effort to reduce congestion.


The sensors provide the data used to estimate the travel times that that are displayed on message boards above freeways. The data also helps ADOT and the Maricopa Association of Governments, the regional transportation-planning agency make decisions about future freeway improvements.

Using electronic wires embedded in the road, the sensors have been used along many Valley freeways for years. The current project is installing additional in-pavement sensors as a more reliable replacement for acoustic devices that are mounted on poles.

When the sensor-installation project is completed, more than 85 locations on Phoenix-area freeways will have new traffic-flow sensors.

Detection, Monitoring & Machine Vision

For more information on companies in this article

Related Content

  • Oregon DOT wins Best of ITS 2015 award
    August 14, 2015
    The Oregon Department of Transportation improved safety on OR 217 by implementing a variety of signage and roadway enhancements. OR 217 currently experiences traffic congestion during peak commute times because of high-density traffic and crashes. The project focused on reducing crashes, helping to clear crashes quickly when they do occur, and giving motorists the ability to make informed travel decisions about traffic flow and roadway conditions. Since collisions on a busy highway can bring traffic to a h
    Read More
  • Benefits of Florida's traffic signal retiming
    November 7, 2012
    Lee County in Florida has consolidated dramatic results of a major traffic signal retiming with installation of advanced monitoring and management technology for generating further benefits. The Lee County Department of Transportation (DOT), in the US State of Florida, has completed retiming of traffic signals for over 50 intersections in the cities of Fort Myers and Bonita Springs. The project aimed to evaluate existing operations and enable adjustments to optimise flows, and has produced dramatic results
    Read More
  • Active traffic management increases safety and capacity
    February 2, 2012
    WSDOT is deploying Active Traffic Management in order to increase safety and capacity on its strategic roads. WSDOT's Patricia Michaud elaborates
    Read More
  • US DOTs introduce measures to stop wrong-way driving
    March 28, 2018
    Wrong-way driving (WWD) is a remarkably innocuous term for incidents that all too often cause some of the worst accidents that emergency services have to deal with. Several US states are now taking steps to minimise the problem, as Alan Dron finds out. You’re driving down a highway at night when you see approaching headlights. You initially assume they are merely those of an oncoming car on the opposite carriageway. It’s only when they are within 200 yards or so that you realise that the other driver is in
    Read More

Highlighted Content