You are going to hire and train lots more traffic police; what are you actually going to have them do? ACTUALLY have them do, not just more meaningless, wishful aspirations about having them tackle "the real reason for crashes".
someone who drives perfectly well, without cutting people up, without crashing, without doing anything stupid will currently get caught speeding and get points. This is what speed cameras chase. Not bad drivers, just speeders.
A traffic cop might see a kid going all over the road, and find out hes drunk/blind/stupid and sort the problem out. A speed camera wont catch this person because they generally travel 10mph under the speed limit all the time.
22% pedestrians, 20% motorcyclists
and there's the two problems right away.
Pedestrians. Why are they walking around on a 70mph dual carriageway at midnight? A few people get killed and they lower the speed limit of the whole dual carriageway to 50mph. WHY is the motorist blamed for Pedestrians walking around on dual carriageways? (A127, South Essex.) Hitting them at 50mph will still kill them anyway so whats the point? How about teaching people NOT to walk in the road. Pedestrians belong on the pavement, not the dam road. Pedestrians shouldn't even count towards "road deaths" /Rant.
Motorcyclists. Now sure there's a high percentage that are smart riders and still going strong but, surely <50% of Motorcyclists have a total utter death wish? For example filtering through traffic fast, while people are changing lanes is just asking for trouble, how many of those 20% were killed on motorways while filtering past traffic at 70mph? Police on the roads will catch these guys, when speed cameras wont. Should also make it law that all cyclists have to wear highVis jackets too.