A good place to start working into this interesting discussion is this article on the Placemakers website (here). The article has an implied criticism of engineers, where it says that:
Generally speaking, traffic engineers only see Links, so when they talk about safety, they’re looking at ways to reduce accidents without compromising throughput. That’s car-first safety. It has its place in certain contexts, but people places are not one of them. People places require safety measures that put pedestrian safety and comfort first.
Another quick start text to check out is a recent post on LinkedIn, by Dewan Karim (see here).