California Keeps Traffic Flowing with Battery Backups at Critical Intersections

August 02, 2002

Because the new LED traffic signals use so much less energy than the incandescent signals they replace, California has been able to install battery backup power supplies to intersections with high traffic volume. The backup power keeps the traffic lights working and traffic flowing even during power failures. "When electric power fails and signal lights go out at a busy corner, traffic slows to a crawl," explained Energy Commissioner Robert Pernell. "Automobile accidents increase, and pedestrians find that weaving their way through the unregulated maze can be a dangerous, challenging prospect. But now local governments can protect critical intersections from power interruptions that can threaten motorists and pedestrians alike." For more information, see the CEC press release.