[JockoT]

The local traffic lights have variable timings (no sensors, countdown timers or visible pedestrian signals). And then there are lights you have never encountered before.
My question is, what is the best way to approach a green light?
If a light is red I hang back, hoping it will change, but I keep getting caught out on green lights, especially if they are already green when they first come into view. I never know whether to keep my speed up, hoping to reach them before they change, or slow down, expecting them to go red before I get there. I seem to make the wrong guess more often than I make the right one. I slow down, expecting them to change but they don't. But just before I reach them they do! If I had just kept going, when first I saw them, I'd have breezed through. Or I don't slow, then have to brake, wasting inertia and wasting fuel. Short of blowing off red lights I have no option.
Is there a technique for green lights? What do you experienced guys do?