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it is worth noting that we have transportation systems where you get into a slow moving vehicle that then speeds up. the cable car is a lot safer than a faster

it is worth noting that we have transportation systems where you get into a slow moving vehicle that then speeds up. the cable car is a lot safer than a faster moving sidewalk because you can just get inside and sit down securely. of course, it takes up a lot more space and costs a lot more money.

Animats 1y ago
That's been tried. Never Stop Railway, 1924.[1] The drive system is a variable pitch screw between the rails. Large screw pitch between stations for fast travel, much tighter pitch in stations for very slow movement along the platform. Never tried again with that kind of drive, although there are park rides where the loading platform moves. This requires safety devices and staff to prevent people jams at the end of the platform. [1] https://www.youtube.com/watch?v=EX_MlWL7YKM https://www.youtube.com/watch?v=EX_MlWL7YKM
- bobthepanda 1y ago
  I'm talking about aerial cable cars, which are plenty in use around the world today. https://www.youtube.com/shorts/X5qjnryYWQY https://www.youtube.com/shorts/X5qjnryYWQY They are pretty common tourist transports in mountainous areas and ski resorts. They're even being used for regular public transport now. https://www.youtube.com/watch?v=vdTE4TCqkZo https://www.youtube.com/watch?v=vdTE4TCqkZo
Someone 1y ago
And you can only hop on/hop off a cable car at predetermined locations. To keep average speed high, those tend to be spaced relatively far apart. I’m not sure about the “takes a lot more space”, and I definitely doubt about the “costs a lot more money”. Using outdoor escalators as proxies, I suspect outdoor moving sidewalks will need lots and lots of maintenance. If you want to have some guarantee of service you’ll also need multiple sidewalks side-by-side.
- bobthepanda 1y ago
  To be fair, on all moving walkways today you can only really get off at the beginning and the end.

Animats 1y ago

That's been tried. Never Stop Railway, 1924.[1] The drive system is a variable pitch screw between the rails. Large screw pitch between stations for fast travel, much tighter pitch in stations for very slow movement along the platform. Never tried again with that kind of drive, although there are park rides where the loading platform moves. This requires safety devices and staff to prevent people jams at the end of the platform. [1] https://www.youtube.com/watch?v=EX_MlWL7YKM https://www.youtube.com/watch?v=EX_MlWL7YKM

bobthepanda 1y ago
I'm talking about aerial cable cars, which are plenty in use around the world today. https://www.youtube.com/shorts/X5qjnryYWQY https://www.youtube.com/shorts/X5qjnryYWQY They are pretty common tourist transports in mountainous areas and ski resorts. They're even being used for regular public transport now. https://www.youtube.com/watch?v=vdTE4TCqkZo https://www.youtube.com/watch?v=vdTE4TCqkZo

Someone 1y ago

And you can only hop on/hop off a cable car at predetermined locations. To keep average speed high, those tend to be spaced relatively far apart. I’m not sure about the “takes a lot more space”, and I definitely doubt about the “costs a lot more money”. Using outdoor escalators as proxies, I suspect outdoor moving sidewalks will need lots and lots of maintenance. If you want to have some guarantee of service you’ll also need multiple sidewalks side-by-side.

bobthepanda 1y ago
To be fair, on all moving walkways today you can only really get off at the beginning and the end.