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

Related Content

  • March 19, 2014
    Flir helps Indonesia start tackling congestion
    Indonesia has started tackling acute traffic congestion in Jakarta and Surabaya. When talking about Jakarta, Indonesia’s economic, cultural and political centre, it is very easy to lapse into superlatives. With a population of over 10 million people it is the thirteenth most populated city in the world and the biggest in South East Asia. The official metropolitan area, known as Jabodetabek, is also the second largest in the world. Almost 98% of journeys in Jabodetabek are made by road and the tremendous
    Read More
  • April 6, 2018
    The importance of going with the flow
    Ensuring worker safety and up-to-date driver information is crucial to ensure that roadworks are not a source of danger and delay. Andrew Williams looks at a scheme on the A14 in Cambridgeshire, UK. In recent years, portable workzone ITS solutions have emerged as important tools in the management of major roadworks and system upgrade projects - and are viewed as an increasingly vital means of ensuring any ongoing traffic flow disruption is kept to a minimum. The technology forms a central component of an
    Read More
  • July 30, 2013
    Virginia presses ahead with tunnels upgrade despite tolls challenge
    David Crawford reviews current developments and legal/financial issues facing tunnel management in Virginia. This autumn the Virginia Department of Transportation (VDOT) in the US will defend its plan to introduce tolling on the Elizabeth River tunnels linking the cities of Norfolk and Portsmouth in the State’s Hampton Roads area. The tolling, which is due to start from February 2014, will be examined by the State’s Supreme Court later this year. The anticipated toll income, along with loans and bonds, is
    Read More
  • February 2, 2012
    Variable message signs continue to deliver travel information
    Arguably the 'face' of ITS, variable message signs are far from being a passing solution
    Read More

Highlighted Content