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

Related Content

  • California DOT implements smart corridor
    October 14, 2013
    The California Department of Transportation (Caltrans) recently completed a smart corridor project on State Route 12 in Solano, Sacramento and San Joaquin counties, and I-5 in San Joaquin County. The project utilises intelligent transportation system (ITS) technology for five electronic message signs and four closed-circuit TV cameras to provide drivers with up to date travel information, enabling them to choose an alternate route in the event of congestion or roadway incidents.
    Read More
  • Benefits of traffic light synchronisation
    January 27, 2012
    Alicia Parkway corridor, located in Orange County, California, was part of Phase 1 of an inter-jurisdictional Traffic Light Synchronisation Programme (TLSP) in Orange County designed to increase mobility and overall drive quality while reducing fuel consumption and greenhouse gas emissions. By increasing average speeds and reducing travel times via the reduction in stops, the programme sought to reduce vehicle acceleration and deceleration events along the corridor; these have been identified as the leadin
    Read More
  • Project to ease traffic on Interstate 80 unveiled
    October 29, 2012
    California’s regional transportation officials are taking a comprehensive approach to relieving clogged arteries that affect the health of commuters and cities along a 22-mile stretch of the Interstate 80 corridor from the Carquinez Bridge to the MacArthur Maze.
    Read More
  • Atlanta’s reversible express lanes project opens
    January 27, 2017
    The I-75 South Metro reversible express lane project In Atlanta, Georgia, US, will open this weekend along almost 21km between Highway 138 and Highway 155 on the new double-lane addition to the I-75 median. The lanes will carry traffic northbound toward downtown Atlanta during the morning rush hour and southbound during midday and peak afternoon and evening traffic. Parsons prepared conceptual design reports for the project, including lane configuration and access studies, as well as the environmental
    Read More

Highlighted Content