Road design, safety and Vision Zero

[plam]

I do!

I'm confused...drivers already some background check to buy a car right? Surely you can't be sold a car unless you have a valid license?

I think you can buy a car but you can't drive it without a license. And certainly there is no screening for criminality (which would also be problematic in its own way given how we've constructed our society, and would not have prevented this incident).