California "Green Lights" Traffic Signals

August 02, 2002

One of the more cheerful outcomes of last year's energy crisis in California is the state began installing brighter, energy-efficient traffic signals. The signals use light emitting diodes (LEDs) and are being installed at more than 13,000 intersections—more than a third of the state's total. The new signals emit more light, are more reliable, and consume less than one fifth the energy of the older incandescent signals they replace. They have reduced the state's power requirements by 10 megawatts (MW).

To carry out the program, the California Energy Commission (CEC) is administering grants to more than 80 local agencies at a total cost of $22 million. The CEC estimates that energy savings alone from the replacement will save $7.9 million per year. For more information, see the CEC press release.