Andrew C!
Been around a while....
these are, of course, driving standards issues, not speed issues.
Both are still prevalent. The main issue I see when out and about in my motor is simple lack of patience. ‘I need to get past that car so I think I’ve made progress’, ‘go thru the red light ‘cos I haven’t planned properly/couldn’t give a toss’ etc etc.
I always makes me smile when a motor that has cut me up to overtake me is sat in front of me at the next set of lights. No real progress, but an increased risk.
Im not sure what the answer is, tho. Flight recorders in cars won’t help the near misses, unless we have properly trained officers to investigate/enforce/advise.