Some drivers are downright reckless and need to be curbed (but speed is a crude measure by which to judge bad driving).
Pedestrians also bear responsibility for road safety too.
Punitive speed limits on all drivers? Is that really the solution here?
Surely we should set speed limits that balance the needs of drivers, congestion, the environment, business, and many other concerns, one of which is pedestrian safety?
I keep hearing arguments that suggest pedestrian safety is the only factor worth considering. If that were true, why not ban all cars? And whilst we're at it, ban running too - God forbid someone might fall and graze their knee.