Pardon me for kind of a stupid question, but I keep wondering. Traditionally, tower cranes' cabins are located at the top of the tower. I can understand why it have been necessary up to ~1990s, when it was the only way for a human to get reliable real-time visuals of what's going on. But today, with the advent of camera and monitor technologies (when cameras and LCD monitors are dirt-cheap), what is the exact problem with moving the crane operator's cabin to the ground level and make all visuals using a system of cameras?
Searching the Internet for the answer, I've encountered quite a few of companies that produce camera systems for cranes, but it looks like that majority of them propose to use cameras as additional viewing aids (i.e. "view from the hook", "view from the pulley", etc), but not replacing the sky cabin.
From kind of delitant point of view, having a cabin up high actually poses a bunch of problems, i.e.:
- safety: fallen crane = very real chance of death or major injuries
- comfort: it's very hard to maintain proper air conditioning and temperatures up high
- time consumption: a way up to the work place takes 20 minutes for an operator, and takes lots of physical endurance to do so
Is it really feasible in modern world to continue using sky cabins on the tower cranes? Am I missing something obvious, or is it just very persistent tradition that nobody dares to break?