Escaping a high rise fire should not be dependent on internal stairs. I was watching a story about a proposed personal parachute for high rise employees when it struck me a rail system built upon on the walls of every new high rise could be incorporated into the designs without affecting appearance much, and would be comparatively cheap at 50 (1 or more every side) feet of rail per floor. I soon found this was not an original idea and basically common sense, but how come nobody is doing it? Please Register or Log in to view the hidden image! This diagram has various sleds that I guess could be put on a specialized rail by a fire department and controlled via remote control with or without firemen aboard depending on risk. It also has personal rails where you could attach your personal harness and slowly glide to safety (or perhaps danger on floors below). If the rail is broken somewhere then a battery operated emergency light could warn people on affected floors that "this rail is out of service" and make them stagger through the smoke (or not smoke) to the next escape. This could obviously work, and could easily and affordably be incorporated into future buildings. Unfortunately public safety features often need to be made law before we would ever see them. In other instance of lower buildings perhaps a rail and platform system that automatically returns to the required floor could replace some outdoor stair fire escapes, although that needs some thinking to engineer. This is just something that seems obvious. I wish they would do it. It might take courage to use an outdoor rail system, but if your choices are limited it might seem a welcome escape.