A typical traffic signal intersection experiences eight to ten local power outages annually. With LIAO battery backup power, some or all the traffic control signals can continue to operate.
This seamless switchover to battery power increases public safety and eliminates the need to dispatch police or other service personnel to direct traffic. If all traffic signals were converted to LEDs, the battery backup system would allow full operation of the traffic signals during a power outage, thus alleviating traffic congestion.