The joke is there, but it's not actually quite that macabre -- if a route feels unsafe, more users will abandom it midway through. The Triborough bridge had a

The joke is there, but it's not actually quite that macabre -- if a route feels unsafe, more users will abandom it midway through. The Triborough bridge had a pedestrian walkway; I've never made it across because the rail is below my center of mass, and nope.