Traffic lights in Kent are to be fitted with low-energy bulbs to help reduce carbon emissions and save money.
Kent's traffic lights are to be fitted with more energy efficient bulbs
Kent County Council (KCC) plans to start switching 16,723 signal lamps and 2,318 push-button bulbs to more efficient ones in 2008.
The council said the drive would help cut carbon emissions and save money as the new lights have a longer lifespan.
Councillor Keith Ferrin said KCC would be the first authority to change to energy efficient traffic lights.
Lights left on
He added: "Switching our traffic lights to using low-energy bulbs makes good business sense.
"KCC would save money and be giving the environment a helping hand."
The council also plans to install wood-chip boilers at 25 schools in 2007 and at the new Kent Highway Services depot in Ashford.
But a local Friends of the Earth group criticised KCC last year after 250 street lights where left on during the daytime for four months in Tunbridge Wells.
The council said a fault made the lamps stay on and they were repaired as quickly as possible.