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

  • What's next for traffic management and data collection?
    January 26, 2012
    As the technologies and stakeholders in traffic management evolve, what can we expect to see happening in the coming years? For many, the conversation of the moment is just how, and how far, the newer technologies and services provided principally by the private sector should be allowed to intrude into the realms of traffic management.
    Read More
  • Monitoring, detection and control systems inside tunnels can do much to improve traveller safety
    August 6, 2013
    ITS technology can do a great deal to improve tunnel safety, as Colin Sowman discovers. It was back in April 2004 that the European Parliament adopted the EU Directive which lays down the Minimum Safety Requirements for Tunnels in the Trans-European Road Network (2004/54/EC). This was the first unitary legislation setting minimum safety standards for European road tunnels and was designed to harmonise the management of tunnel safety at a national level. Operators of existing tunnels have until 30 April 201
    Read More
  • Cash for Southern Nevada bus rapid transit
    April 25, 2024
    Maryland Parkway Bus project received $150m from the US government
    Read More
  • Flexibility, interoperability is key to future traffic management
    February 3, 2012
    Jon Taylor of Faber Maunsell and Tabatha Bailey of Transport for London describe how an unusual mix of traffic practitioners, researchers and industry are working together to build new tools for the future. As we face higher expectations for managing congestion from both citizens and politicians, and as more and more data is becoming available from new sources, our traffic management challenge is changing.
    Read More

Highlighted Content