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One Way to Cut Rush-Hour Traffic

One Way to Cut Rush-Hour Traffic
Photograph by Seb Oliver/Getty Images

Two years ago, the streets of Grapevine, Tex., like thousands of roads across America at rush hour, resembled a parking lot every afternoon. The town of 50,000 near Dallas/Fort Worth International Airport saw 300,000 outside vehicles pass through each day as drivers sought to avoid highway delays.

To solve the problem, city officials turned to Rhythm Engineering, a traffic consulting firm in Lenexa, Kan. Its proprietary InSync system blends real-time street monitoring with adaptive algorithms to do the seemingly impossible: not only speed up traffic but also make it safer.