In Victoria, Green is ground and LED Reds can be changed every 2 years LED Greens and LED Yellows after 5 years. Every traffic signal must be visited every 2 years for LED instead of every year for incandescent. Even though the reds typically have a Mean failure rate 10 times longer than incandescent lamps the reds are still required to be changed around every 2 years. It seems that reds must have the highest reliability and the few years we have been using them they are proving to be very reliable and of cours the decreased loads aer good for the city budget too. Longer service intervals is not good for the city electricians but otherwise the taxpayers are happier.
