[prawn]

Something that also doesn't help with a lot of intersections is dense street parking (blocks line of sight for approaching traffic). It's problematic in cities and getting worse in suburbs. The street I grew up on, was generally empty of parked cars making it a great place to ride or skate in the 1980s. Now, that same street has loads of parked cars - people have second cars, use the street instead of their garage, or their adult children have cars.

Roundabouts would also drastically help many US cities currently relying on all-way stops.