I mean technically can make them more fatal as well.

It’s an easy uninteresting, oft-repeated title… I don’t even want to read the article as a result.

Quick guess: narrow means slower (even if just pedestrian friendly, accessible corners at intersections). Slower is safer.

Narrower lanes allows for bike lanes. Restrictions on lane use encourage more car public transit.

At some cost (combination of time and money) people will either ditch personal vehicle, or change jobs/move to escape the cost.

Threats to current car culture won’t earn votes making any change hard, unless presented as safer.