yeah, if you have any doubt at all if it's safe to hit an intersection, listen to your instincts. i can't think of anything so important it can't wait long enough for the light to go if the alternative is me getting hit by a car. sure, there are some lights it's safe to blow, and that has as much to do with you as it does with traffic, but if i'm ever in doubt, i stop and trackstand till i am sure.