Traffic Signal Coordination occurs when a group of two or more traffic signals are working together so that cars moving through the group will make the least number of stops possible. Each traffic signal is set up with a fixed amount of time, also known as a cycle, which is divided among all the directions. By having all signals in a group running the same cycle, it then becomes possible to "line up" the green lights for one direction. The way the green lights "line up" depends on the distance between traffic signals and the speed of the traffic.
Unfortunately, even when traffic signals are coordinated, you will still have to stop at red lights. In order to operate traffic signals safely, several things must be considered, such as traffic movements, pedestrian crossing, cross traffic, and left turn signals.
For more information, contact the Irvine Traffic Research and Control Center (ITRAC) at 949-724-7324.
Many major arterials in Irvine are coordinated, however, where these arterials intersect, Irvine Engineers need to balance the amount of green time in accordance with the nature of traffic flow during peak hours.
City of Irvine 1 Civic Center Plaza Irvine, CA 92606-5207 Phone: 949-724-6000 Hours of Operation:
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Friday 8 a.m.- 5 p.m.
