An ounce of prevention is worth a pound of cure.
If a pedestrian is hit and they had the right of way, odds are that the vehicle was turning and thus already going much less than 40km/hr. The survivability rates of 40km/hr versus 50km/hr are meaningless and changing the speed limit likely will have no effect on whether or not a driver turns right on a red without stopping and runs over a pedestrian. How does one fix this type of driving? I'm not sure but decreasing the speed limit won't accomplish anything.
If a pedestrian is hit away from an intersection by a car moving 40km/hr of faster I'd be willing to bet that they did not have the right of way. If they choose to cross a road in such a location then they do so at their own peril. The onus is on them to cross safely.
If a driver runs a red light and hits someone at 40 versus 50.. that's worth considering, but what percentage of pedestrian collisions at intersections are due to this?
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