Comment by ImPostingOnHN

I think they question they were asking was: What is the fire upon which gasoline is being poured?

Given that, even if someone entered the intersection on yellow, they would be out of the intersection before perpendicular cars/bicycles/pedestrian signals turn green, how is it dangerous?

It seems the risk of collision is 0 as long as neither the driver nor the perpendicular cars/bicycles/pedestrians are illegally running red signals.