RLJ (Red Light Jumping). (The definitive bikeradar thread)

Two situations. In the first, a cyclist arrives at a pedestrian crossing signalled by traffic lights. The lights are red but apart from the cyclist, both the roads and pavements are completely deserted. After looking around to check, the cyclist jumps the red light. This is illegal - therefore what the cyclist has done is bad.

In the second, a car speedily approaches a busy crossroads and pedestrian intersection. The lights turn amber for the car, and pedestrians start to cross before the man turns green. The car is rather close to the intersection, so rather than slow down and stop for the amber he speeds up in hopes of making it across, beeping and tooting his horn to get people crossing out of the way - and narrowly misses hitting them. This is not illegal (as far as I am aware? please correct)

• therefore what the motorist has done is good.
  
  

As most crossings are in 30mph zones, if you see Amber and have time to start tooting your horn to warn potential crossers of your aproach.. a) you're too far away to attempt to beat the light (and yes driving without due care and atention) b) you were driving too fast in the first place.

My point being if you can toot your horn, you can apply the brake (although stopping takes longer, you naturally brake in times of danger)

What if the Light is green for the motorist and an OAP was still on the crossing, is the motorist allowed to mow them down?

Is the OAP breaking the law? as the little green man is now a little red man?