Kurt "The CyberGuy" Knutsson explains how adding a fourth traffic light may be beneficial to traffic flow and reducing fuel consumption.

Anyone who has gotten behind a wheel knows that feeling of being stuck at a red light, researchers are working on ways to reduce those instances. One of the ways is through changing traffic signals.

Knox County traffic engineers Grady Owen and Alan Childers use technology to optimize local traffic signals and improve road safety and efficiency. Here's how.