Colorado looks to Australia to solve I-25 traffic congestion

Easing the notorious rush-hour gridlock on Interstate 25 south of Denver will require controlling thousands of motorists’ access to the highway with fraction-of-a-second precision never before seen in Colorado…

Many entrance ramps on metro Denver highways have traffic lights to control traffic flow but they aren’t programmed to respond to real-time conditions. By making constant and minute changes to the length of time cars wait on entrance ramps before merging onto the highway, traffic engineers believe slowdowns and logjams can be greatly reduced — or avoided altogether.

The proof, according to Colorado Department of Transportation Smart 25 Project Manager Zach Miller, resides nearly 8,800 miles away in Melbourne, Australia.

“Australia has figured out how to use algorithms to resolve complex traffic problems to prevent congestion,” Miller said. “I am hopeful this technique can be beneficial to CDOT as well.”