How can streets be made safer for pedestrians?

This week, another pedestrian was killed, this time on a Laval street, as described in this piece, which asks how streets can be made safer.

But it’s clear that it’s always a struggle. You make streets safer for pedestrians by slowing traffic, which goes against the fundamental 20th‑century dictum that motor traffic should be allowed to move as unobstructedly as possible everywhere at all times.