Sure it's harder to support a subjective accusation of unsafe/bad driving, if it's just the opinion of the enforcer/police - much easier to have an objective measurement/speed camera. Unfortunatly this does not make it an effective reducer of accidents (below what we have now) so what would you suggest - accepting the expensive and ridiculous mishmash of token enforcement (status quo)???
Why aren't we doing something about the appallingly low standard of initial training, absence of periodic driver standard reviews & the failure to enforce good driver behaviour.
The following are just some of the routine driver behaviours that could be addressed but are not, putting all road users at elevated risk. I see this every time I go anywhere (even see professional drivers doing these):
The lemming like desire to drive to the right, to the point where I have often driven up to 50 kilometres in the left lane of a multi lane highway, at the 110 kph posted speed, passing the slower congested three/four lanes of traffic on my right. You will also see this brain dead activity on three lane hills, with idiots sitting in the right lane, from the bottom to top, not passing anything and preventing down hill traffic from passing..
Congenital inability to keep left, (unless when passing) - crates massive congestion (see above).
Failure to use indicators and when they do its incorrect - once explained to me as the Index Finger Method - Hand on wheel, index finger extended, turn wheel, finger engages indicator stalk, indicator comes on as vehicle well into manoeuvre (no pre manoeuvre warning to other road users). This national habit is often accompanied by what would seem to be an inability to use rear view mirrors.
Inability to merge with traffic, extreme examples may be seen, again on motorways where some merging vehicles actually come to a stop - extremely dangerous. They should be smartly accelerating, to match highway speed, WITH RIGHT INDICTORS ON, smoothy merge into following traffic. Always helpful if established vehicles move to the right lane, to facilitate merge (again not often done)
Do not understand how to use traffic circles - can be positively dangerous in their ignorance - see proceeding (traffic circles largely being a merging operation).
Do not excelerate sufficiently to safely pass another vehicle.
Do not pull over to allow accumulated line of traffic to pass - all to often a "Grey Nomad" loitering along at 20 -30 kph below the posted limit - lack of courtesy causing frustration in other drivers, which may result in an accident.
Truck drivers causing mobile traffic jams by taking many many kilometers to pass.
Crowding cyclists & other road users - I used to ride a horse into town, drivers would slow & give me a wide berth, not anymore - had to give that little pleasure up
etc etc
We have come to accept the speeding brainwashing, as the only control measure - to our cost both in increased risk and in economic loss.
I haven't even started on the bad road design, that further increases the drivers risk.