Carlos,
Arguably, yes. However, I ran out of energy before I could implement that. The bollard code does very similar things but, to be honest, I can't really be bothered at this time. If someone else wants to implement that, I will happily integrate their patch. My feeling was that in most places where traffic signals and crossings are, the ways will contain points fairly close together and so the amount of way that is affected will actually be quite small. You're probably right in this assumption. But it can be different for other POI's, like stops or toll booths. I can remember now several roads that end in a stop after some hundreds of metres or even kilometres of straight line. And the same can be applied to a motorway in which you have to stop at a toll booth. What's your opinion?
I agree, that would be a good example where the length of way that has its speed/class reduced should be limited. I suspect it will get done sometime but I'm not doing it right now - my mkgmap hacking energy level is depleted, got to wait till it recharges. Still, it's not really a big deal because all it means is that the router will be a bit less keen (if routing for speed) to use that way than it would do otherwise, a speed level reduction of -1 (for example) is not going to make much difference even over several Km. What I was aiming for was a means to add a time penalty for each instance of lights/crossings/miniroundabouts/etc so that when cross-town routing it would, hopefully, pick a faster route. We will see if that proves to be the case in practice. Cheers, Mark