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Atlanta traffic bad but predictable

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Weekly unique visitors to the Georgia Navigator website: 60,000

GDOT congestion monitoring cameras: 600

Highway digital message signs in metro Atlanta: 110

GDOT video and microwave congestion monitors in metro Atlanta: 2,800

HERO highway assistance units: 88

Source: Georgia Department of Transportation


Some of these started two decades ago, and some are cutting-edge right now.


  • On Cobb Parkway from Marietta to Acworth, sensors “sniff” the Bluetooths in cars to track traffic speeds. For now, it helps time the traffic lights. This technology might also be used when the state includes arterial roads in Georgia Navigator.


Corridor management

  • Traffic lights are timed by the patchwork of cities and towns that own them. As of 2010, the Department of Transportation has gotten them to agree that certain corridors should be managed regionally instead.


Georgia Navigator

  • DOT’s online congestion map and phone bank at georgianavigator.com allows drivers to avoid traffic jams and not add to them. Now only for expressways, next year it should include major surface streets as well.


Mobile apps

  • Navigator is expected to go mobile next week. DOT is already partnering on another app, WAZE, that crowd-sources highway traffic information (letting drivers contribute what they encounter).


HERO units

  • The yellow trucks keep highway traffic moving by starting stalled cars or pushing them out of the way.


TIME Task Force

  • The state overhauled interstate crash cleanup. Only wreckers certified for fast wreck clearance can remove tractor-trailers now, and they get a bonus if it’s done in 90 minutes or less. Responders train together now on how to work quickly at crashes.


Ramp meters

  • These traffic lights alternate red-green to let highway on-ramp drivers enter one at a time.


Source: Georgia Department of Transportation

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