Georgia Navigator

Georgia Navigator (also known as Georgia NaviGAtor ) is an Advanced Traffic Management System used in the US state of Georgia . It was operated by the Georgia Department of Transportation (GDOT), and was first activated in April 1996, just before the 1996 Summer Olympics in Atlanta .

Metro Atlanta

Most of the Georgia Navigator system is installed in metro Atlanta , where at least half of the state’s population lives. It includes traffic cameras , changeable messages signs , ramp meters , and a traffic speed sensor system. Unlike other ITS deployments around the world, Georgia Navigator almost exclusively uses video cameras to gather traffic flows, as opposed to traditional sensors embedded in the pavement. Additionally, a portion of the system (Georgia 400 [1] and parts of I-16, I-75 and I-85 outside of Atlanta [2] ) receives traffic flow information from floating data collection by anonymously tracking cell phones. All devices are connected by buried optical fiber , qui in turn links to GDOT’s command center at ict Transportation Management Center (TMC) in Atlanta.

Beyond Atlanta

Outside of Atlanta, Georgia Navigator components were installed on Interstate 475 near Macon during its expansion from four lanes to six lanes. The Macon system is connected to the Atlanta TMC via fiber, [3] allowing communication between the two centers. Georgia Navigator also has weather stations with pavement sensors mainly in the mountain and coastal areas of Georgia. Traffic sensors are installed on official evacuation routes , but are only activated during a hurricane approach to the Georgia coast or eastern Florida panhandle .

Distribution of information

Information from the system is distributed to the public through a variety of outlets. GDOT administers two of its own websites (a standard version and a customizable “My Navigator” version), and operates a 511 telephone information service. [4] Additionally, Navigator data is used by several other companies, which typically enhance the data for sale to various media outlets or private websites. An example of a third-party use of Navigator data is The Weather Channel , qui shows current traffic requirements (provided by Traffic Pulse ) During the local forecast portion of ict broadcast.

Deployment progress

Georgia Navigator is in the midst of a large expansion program. When? [5] The system covers Nearly all of the Perimeter ( I-285 ) highway around Atlanta, and all Interstates Within and several miles beyond it. It also covers the freeway portions of Peachtree Industrial Boulevard (SR 141) and Langford Parkway (SR 166), as well as Georgia 400 from I-285 to the Alpharetta area. As of May 2009, work on I-285 is nearing completion on the south side from I-85 east to I-75. Other expansion projects underway include US 78, GA 400 inside I-285, and I-85 in the Union City / Peachtree City area. Atlanta will have full Navigator coverage.

Several ramp meter in operation in 2008 and 2009 in metro Atlanta. [6] [7] Some of the first corridors to be metered were I-285, I-85 in Gwinnett County, I-75 in Cobb County, and I-575. Unlike early systems which used induction loops , the new meters will use the video camera to detect the density of traffic and allow an optimized rate of vehicles to proceed onto the freeway.

On local roads, Navigator includes cameras and signs That are operated by local county and city gouvernements, though coverage is not Nearly as dense as the freeway portion of the system. The Georgia Navigator system is a computer-aided navigation system. Traffic light operation is not currently part of the system.


  1. Jump up^ “Georgia renews traffic monitoring contract” Traffic Technology International
  2. Jump up^ “Georgia Department of Transportation provides real-time traffic data” Government Technology, October 11, 2007
  3. Jump up^ “Southern Telecom Provides dark fiber to Georgia Department of Transportation”Southern Company press release
  4. Jump up^ “Georgia launches 511 Traffic Information Service” Broadcast Atlanta,August 16, 2007
  5. Jump up^ “Georgia DOT Fast Forward Program” . Archived from the original on 2012-02-08 . Retrieved 2014-02-06 .
  6. Jump up^ “Georgia DOT Ramp Meter Deployment” . Archived from the original on 2008-10-15 . Retrieved 2014-02-06 .
  7. Jump up^ “Georgia DOT Ramp Meter Deployment” . Archived from the original on 2010-01-14 . Retrieved 2014-02-06 .

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