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The Bus That Rides Above Traffic
An anonymous reader writes "China is the new tech king. They're developing a new, two-lane bus system that travels over traffic below. It's claimed to cost 10% of a subway system and use 30% less energy than current bus technologies." This one has been boggling my brain. I can't see how this is a good idea or safe. But it sure is awesome.
Couldn't you get trapped under a bus when there's congestion and end up missing your destination?
Do they have trucks in that area? Wouldn't that pose a minor issue?
I don't speak Chinese but from watching the video it appears that there is a warning signal when a truck is detected as approaching from behind or in front of the bus. In addition to this there are black and yellow poles that apparently act as truck detractors like the upside down U-shaped hoops in lawn croquet. The bus would fit over these perfectly but a truck in this same section of traffic would hit one of these before endangering the bus. It appears that this would designate which lanes are okay for trucks (however they then also pose a bit of a traffic obstacle where they come down in between lanes).
My bigger concern is turning and how the sections bend and twist between themselves (as seen at around 5:30 in the video). Is this on a rail or not? Because I could see that being potentially problematic and accident prone if drivers fail to yield to you. I'm interested that they're already planning on deploying this as I think there are things to iron out yet.
My work here is dung.
I think the use of the word 'bus' is problematic here.
I think of it more as a substitute for light rail.
I don't see it being too useful for new developments, but I could definitely see it being useful in areas where you can't just add another lane for busses or put light rail on its own. A lot of our cities are built up.
So the alternative is either bore underground with an expensive subway, go overhead with an expensive skytrain (like vancouver), or do something like this. I'm idealizing a bit here just from the video. But if the only infrastructure needed in the guide rail... it could definitely be cheaper.
Safety wise... no doubt there are issues. I'm especially worried about drivers thinking they are going to miss their turn while being stuck under the bus. They might end up doing some stupid things. I really dont see trucks swerving out of the way like in the video. They would probably either be content to stay behind the bus or go the next lane gradullay.
That's a fascinating idea. Some postings claim that construction will start this year, but it seems unlikely. They'd have to build a prototype and a test track first, and if they had that, there would be pictures.
The thing runs on road wheels, not tracks. Steering is at least semi-automated, to keep it properly positioned. It's electrically powered, with recharging as it passes through stations. The electrical contact mechanism for recharging, as drawn, is wildly optimistic about the difficulties of making contact with a moving vehicle. The illustrations show solar cells atop buses and stations, but no way can those yield enough power for this thing.
They're vague about how the articulated bus corners. The trick with articulated buses is avoiding crush points. Real articulated buses have turntables and bellows at the joints, and they narrow at the join region. That's going to be tough with a vehicle this wide. Also, it's not at all clear how transitions to hills are handled. Does it articulate in pitch, too? All that can be made to work; San Francisco, of all places, has large articulated buses. The joints were troublesome at first, but the second generation of joints seems to work adequately.
Also, on sharp turns, there had better not be cars underneath.
The emergency evacuation slide system is a bit much, as is the roof entry stair system.