It looks like instead of pinging carelessness, we will soon be keeping people to the speed limit.
With the reducing of speed limits being pulled, at least this will give another way to reduce the impact of crashes.
Unlike the comment on reddit saying this won’t reduce crashes, I’m going to point out that it’s not designed to. Road to zero is about recognising crashes will happen, this move is about reducing the damage when crashes inevitably occur.
Realistically, most cars these days have cruise control. If your car doesn’t, the car in front of you (or in front of them) probably does. So it’s unlikely you’ll be unable to get the speed right.
A much harder thing is the mental hurdle of driving at a speed lower than it seems the road can handle (because our assessment is based on everything going right).
Driving with cruise control enabled tends to reduce situational awareness and increase response times, particularly if it also enables the driver to be distracted by other things.
I would argue that an attentive driver who ignores posted limits and instead adjusts their speed to be appropriate to their situation is a far safer driver than a distracted driver with their cruise control set to the limit.