We are looking at various options of linking the pedestrian network on two sides of a new highway that is being developed in town. Part of the discussion this morning centered on pedestrian safety and preference regarding overpass vs. underpasses. One of my colleagues mentioned a psychological study and report comparing how safe people feel using an overpass vs. an underpass. Although I've done a little googling to try to find said study, I've come up with nothing. Anyone know of a source for this type of information?