Following its plan to bring London out of the shade with shadow-free skyscrapers, NBBJ has unveiled a new proposal to replace tube trains in the London Underground's Circle Line with travelators, or moving walkways. The firm says this would allow users to stroll relatively long distances more quickly than if traveling by train.
NBBJ's design (which is wholly conceptual) features three color-coded travelators of varying speed, marked in yellow, orange, and red. A commuter would step onto the yellow walkway first, which moves at a minimum speed of 3 mph (4.82 km/h), before it builds up speed to a maximum of 9 mph (14.5 km/h) between stations, and then step onto the adjacent orange walkway, which moves at a maximum of 12 mph (19 km/h). Finally, the red walkway would zoom along along at a top speed of 15 mph (24 km/h).
"When added to an average walking pace of 3 mph, pedestrians would actually move faster on foot than today’s Circle Line trains, which must stop for boarding at each station," says NBBJ. "The result would be considerably quicker, more enjoyable and healthier journeys."
Obviously, there are some drawbacks to the idea. While moving walkways are used by large number of travelers in airports worldwide, being required to navigate such a system would no doubt prove tricky for the elderly and some disabled people.
Still, for those ready, willing and able, NBBJ's walkways would perhaps offer an attractive and healthy alternative to being stuck on a crowded train each morning.
Source: NBBJ
Certainly it would be healthier, faster and quicker and it could also be much more pleasant if the tunnels were made attractive. What a boon in bad weather!
Perhaps more such travelator routes would follow and we'd all be better off for the reduced congestion, waiting and cramming into overcrowded trains.
Good luck to NBBJ. I hope to see it happen!
there is no question they 'could' theoretically be more efficient. the reality in MANY experiments is simply that they are not.
this reality is from practical experience of building a few. read your history in this area it is worth it.
the underlying solution is that you cannot move large objects continuously running them. escalators are not even that big and they tend to have all sorts of maintanance problems. there are probably many problems this is the case, but the likely primary candidate is that all sorts of traction and friction cause vibration of all types that reverberates and causes more damage the larger the thing being moved.
the solution is obvious magnetically levitated small platforms that move slowly, as modular items, even one behind the other (nearly continous), on a long track rather than continuous piece of large walkway.
this way, the gaps between the modular units don't transmit vibration and if one platform breaks just replace it modular, you don't need to stop and fix the whole thing.
pretty obvious solution, but that's only because over 2 decades of experiments actually yielded WISDOM from engineering. if you cannot learn from other's hard earned mistakes/troubles/obstacles, you cannot make progress.
Another thing, you need travel in two directions - no one is going to travel all the way round just to get to a station a few stops before their station.
Also, how would this cope with the massive influx of people at rush hour?