Motorists often forget that a lot of motorists jump red lights too, and then there's the habitual speeding that seems expected of drivers, rather than being recognised as dangerous behaviour. With red light jumping, there's also a very different pattern of behaviour as motorists will speed up to get through a light that's just turned red, whereas cyclists tend to either slow down or continue at the same pace when RLJing.

There's also a difference in where the risk is, as cyclists are mainly endangering themselves (also pedestrians, but crashing into a pedestrian is likely to hurt the cyclist), whereas motorists are mainly endangering others.

The best way of dealing with close-passing motorists is to run cameras (front and back) and let the police deal with the driver, but it depends on what area you're in as to whether the force will deal with it appropriately. Avon & Somerset is a good one in my experience.