Atlanta deploys Bluetooth-based DMS to help improve travel times

The Cobb County Department of Transportation (CCDOT) in Georgia, USA, has activated six full-colour dynamic message signs (DMS) in the metropolitan Atlanta area in a bid to improve travel times and enable motorists to choose less-congested routes. The LED signs have been installed on Cobb Parkway, South Marietta Parkway, Roswell Road and Spring Road to provide travel time information for common destinations and indicate the congestion level related to specific routes in real time. Travel times on I-75 and C
May 10, 2017 Read time: 2 mins
The Cobb County Department of Transportation (CCDOT) in Georgia, USA, has activated six full-colour dynamic message signs (DMS) in the metropolitan Atlanta area in a bid to improve travel times and enable motorists to choose less-congested routes.


The LED signs have been installed on Cobb Parkway, South Marietta Parkway, Roswell Road and Spring Road to provide travel time information for common destinations and indicate the congestion level related to specific routes in real time.

Travel times on I-75 and Cobb Parkway appear in digits that are green, yellow or red, depending on the average speed of the roadway. Green digits indicate near free-flow speeds, yellow digits indicate moderate speeds and red digits indicate slow conditions. Public service announcements as well as information related to incidents, construction and special events also will appear on the signs.

The travel time messages use real-time data collected by a recently expanded travel time system, which now covers many major arterials within Cobb County and freeways in the Atlanta metro area. The data comes from detectors that collect anonymous electronic addresses from motorists’ 1835 Bluetooth and wi-fi-enabled mobile devices.

Air Quality & Weather Systems Networking & Communication Systems

For more information on companies in this article

Related Content

  • Bitsensing makes modern history in fair Verona
    July 3, 2025
    Shakespeare’s Verona was a place of star-cross’d lovers – today, it’s the traffic which is more of a problem. Euichul Kim at Bitsensing takes up our story…
    Read More
  • Sensys contributes to smart travel in Slovakia
    March 5, 2025
    Firm deploys sensors at intersections and pedestrian crossings in Trnava
    Read More
  • Smart Spanish city trials cell-based traffic management
    November 7, 2013
    David Crawford reports on an urban electronic nervous system. The northern Spanish city of Santander – historically a port - is now an emerging technology showcase attracting global attention as a prototype for a medium-sized smart city of the future. In a move to determine the optimal use of available data, it is creating a de-facto experimental laboratory for sensor and mobile phone-based urban traffic management and environmental monitoring innovations.
    Read More
  • Keeping a weather eye on road conditions
    September 26, 2014
    Drive C2X has shown that advanced warning of poor road conditions could cut fatalities, as David Crawford explains. Connected vehicle (CV)-based warning technologies could mean 6% fewer deaths and 5% fewer injuries in road traffic accidents in Europe, according to the final results of the European Commission (EC) co-funded DRIVE C2X project. According to the European Centre for Information and Communication Technologies (EICT) which provided management support, these “prove that CV systems work and can hav
    Read More

Highlighted Content