The major problem with protected infrastructure is that they do a poor job at managing intersection conflicts. Intersections are where the majority of collisio

The major problem with protected infrastructure is that they do a poor job at managing intersection conflicts. Intersections are where the majority of collisions happen. If traffic cannot see other traffic when approaching an intersection, then some type of signage or traffic signal is required to control approaches to the intersection. But if you have too many modes of transportation making use of the intersection, then the phased signals start taking too long and you start having compliance issues. This then leads to more collisions.