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High Speed Travelator 333

Anonymous Award writes "Remember those old Isaac Asimov tales of cities of the future, where everybody walked along on moving sidewalks, sometimes clear across a country? Today's airport travelators have always been disappointingly pale imitations of these, but now in Paris we may be seeing the true birth of this wonderfully dangerous mode of mass transportation. Its already as fast as a bus, but when they can crank them up to motorway speeds... well, lets just say this may have a better chance of having cities designed around it than certain other recent innovations."
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High Speed Travelator

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  • You know... (Score:4, Interesting)

    by Anonymous Coward on Friday July 04, 2003 @09:10AM (#6366583)
    When it gets up to a certain speed, the wind resistance against your body will be greater than the friction of the belt against your feet, and you will cease to move forward...
    • Re:You know... (Score:5, Informative)

      by archeopterix ( 594938 ) on Friday July 04, 2003 @09:14AM (#6366608) Journal
      When it gets up to a certain speed, the wind resistance against your body will be greater than the friction of the belt against your feet, and you will cease to move forward...
      Now this should look funny. But if you enclose the belt in a tube, with air moving with the speed of the belt (either artificially propelled or just "pulled" by the belt), the wind resistance becomes less of a problem.
      • by Anonymous Coward on Friday July 04, 2003 @09:28AM (#6366682)
        "But if you enclose the belt in a tube, with air moving with the speed of the belt (either artificially propelled or just "pulled" by the belt), the wind resistance becomes less of a problem."

        Until you fart! "Damn, this smell has been with me all the way from Pittsburgh!".
        • Re:You know... (Score:4, Interesting)

          by Funkitup ( 260923 ) on Friday July 04, 2003 @11:00AM (#6367160)
          All the people on the belt should pull enough air along with them so air pumps wont be that necessary.

          A basic invention is not dissimilar to a train - you get into a box that has rollers/wheels on the bottom. Internal friction in the wheels/rollers will accelerate the box on the conveyor belt and the box can then be accelerated to whatever speed wanted (extremely fast if in a vacuum). The same effect will slow the box down when it comes off the other end.

          Boxes can then be sent back using a travellator that goes the other way, or another idea is to make them collapsible so they can go back under the conveyorbelt.
    • by x0n ( 120596 )
      unless it is contained in a tunnel with the wind being blown behind you at the same speed. Oops, the conveyor belt stops, blown onto your face, sue! Oops, wind stops, blown backwards, smash the face of the person behind you, sue! You will have people literally running into the back of you.

    • by io333 ( 574963 ) on Friday July 04, 2003 @09:15AM (#6366612)
      Not if it travels in a tunnel and they evacuate all the air.

      I loved that old story. I hope this really happens!
    • Re:You know... (Score:3, Insightful)

      by visgoth ( 613861 )
      IANAP (I am not a physicist) but the velocities needed to create that much atmospheric friction would appear to be pretty damn high.
    • Re:You know... (Score:5, Insightful)

      by BorgDrone ( 64343 ) on Friday July 04, 2003 @09:37AM (#6366717) Homepage
      you will not cease to move forward.

      Once the wind resistance equals the force from the belt against your feet, you will cease to accellerate, it's not like you're suddenly going to stop.

      Note that the belt has to move pretty fast for that to happen.
      • Re:You know... (Score:2, Informative)

        by Anonymous Coward
        "Once the wind resistance equals the force from the belt against your feet, you will cease to accellerate, it's not like you're suddenly going to stop."

        This isn't a case of two opposing forces acting at the center of gravity of a rigid body. You've got the friction force of the belt acting tangentially at the very bottom, and the drag force acting in the opposite direction all over the body. What would actually happen when the drag force got too strong is that the high torque would cause some people on
    • Re:You know... (Score:5, Interesting)

      by klaasvakie ( 608359 ) on Friday July 04, 2003 @09:47AM (#6366759)
      When it gets up to a certain speed, the wind resistance against your body will be greater than the friction of the belt against your feet, and you will cease to move forward...

      IANAP either, BUT I just walked to our wind tunnel at university [], and stood in it. It takes no effort to stay upright up to 50km/h. At 80km/h one has to concentrate on staying upright, didn't go faster than that.
    • Re:You know... (Score:2, Insightful)

      by FoxMcCloud ( 572729 )
      Well actually the friction only acts on your feet, while the wind resistance acts on your whole body (the front of it anyway), so you'll very likely fall backwards rather than just stop moving forward...
    • Re:You know... (Score:3, Interesting)

      I think you'd actually lose your balance as the friction force would act on your feet whereas the drag force would act on your whole body. Anyway at what speed would the two forces be equal?

      drag = 0.5*C*A*D*V^2
      C is the drag coefficient
      A is the cross section area
      D is the density of air
      V is the velocity

      The frictional force will equal FMg
      F is the coefficient of friction between the walkway and the shoes of the person
      M is the mass of the person
      g is acceleration due to gravity
  • by TerryAtWork ( 598364 ) <> on Friday July 04, 2003 @09:11AM (#6366588)
    by Heinlein was one of the first ScFi stories I ever read!

    Glad to see it coming to fruition!

    • by GeorgeTheNorge ( 67545 ) on Friday July 04, 2003 @09:19AM (#6366640) Homepage
      Thanks for reminding me of the title.

      What I remember of the story was that they had this rolling road that spanned the USA from east to west, with lanes that went faster and faster. You got on the first slow speed lane, and just walked over to successively faster lanes. The fastest lane was some cool 1950's velocity like 150-300mph.

      Some disgruntled workers clipped a lane or two, with expected results.

      Nice to see Robert Heinlein's idea making it to reality, now if I could only speak Basic with someone on the moon, or have a farm on Ganymede!

    • by WindBourne ( 631190 ) on Friday July 04, 2003 @10:02AM (#6366823) Journal
      of course, in the story the attack takes place by having the men travel via a self balancing unicycle - segway is well on its way to that view. I suspect that we will see cities using both ideas in the future.
    • Ouch! (Score:3, Funny)

      Where do you want to be dragged by the balls today?

      I read that as a part of the rest of the post at first, and wondered if that was how those roads worked...

  • The Roads Must Roll (Score:5, Informative)

    by Titusdot Groan ( 468949 ) on Friday July 04, 2003 @09:11AM (#6366589) Journal
    See also The Roads Must Roll []; Robert Heinlein's book based upon moving roads and what happens when the guys who maintain them go on strike ...
  • by mikeophile ( 647318 ) on Friday July 04, 2003 @09:13AM (#6366595)
    Imagine getting a pants leg caught in one of these people gobblers.
  • Transition (Score:5, Interesting)

    by The Only Druid ( 587299 ) on Friday July 04, 2003 @09:13AM (#6366597)
    As mentioned in the article, the most difficult issue is the transition from moving on the walkway and moving on stationary ground.

    It seems to me the best solution to this is to have "lanes" in the walkway. The far left lane would move at the maximum speed, whereas successive lanes to the right would be decelerated. When exits were reached, you could easily step to the right to get to a lower speed; the transition between 9km/h and 6km/h is still a transition, but its less than 9km/h to 0km/h.
    • by x0n ( 120596 ) <oising.iol@ie> on Friday July 04, 2003 @09:16AM (#6366620) Homepage Journal
      Yep, it's all very clinical and precise until you bring alcohol into the equasion.

    • Re:Transition (Score:2, Interesting)

      by KingJoshi ( 615691 )
      Sounds like a nice idea, but people hold on to handrails. You need to have some type of handrails overhead that's short enough for everyone but not too short to be inconvenient for tall people.
      • Re:Transition (Score:5, Insightful)

        by The Only Druid ( 587299 ) on Friday July 04, 2003 @09:30AM (#6366689)
        I dont know; in my personal experience with these devices (in their slower, American and Australian forms), I've rarely seen people hold the railing. Most often, they're holding their bags, walking, or reading, etc.

        Obviously, I'm not suggesting no one uses the railing. But the people who need the railing (i.e. the elderly, the poorly balanced) might not be well advised to use such a device as this.

        Alternately: put hanging handles a la the subway system. They'd be adjustable (i.e. you could raise/lower them) with one hand, and then you'd avoid the need for a railing.
    • Re:Transition (Score:4, Informative)

      by tfischer ( 64688 ) on Friday July 04, 2003 @09:34AM (#6366708) Homepage
      >>It seems to me the best solution to this is to have "lanes" in the walkway.

      In fact, this is exactly what they have in Paris. The high-speed travelator was put in between two other standard moving walkways. One of the standard walkways goes in the opposite direction, and the other lets you move along at 3km/h. So pedestrians do have a choice between the 9km/h lane, the 3km/h lane, or the "old fashioned" 0km/h walkway.

      The only thing I don't like about the highspeed walkway is the fact that it is only running during the workday, Mon-Fri. There were enough people who were falling on it that they had to employ people to stand at both ends of the thing to make sure that users don't hurt themselves...

      • Re:Transition (Score:2, Informative)

        by putaro ( 235078 )
        Not quite. The idea would be to have the lanes running at different speed alongside each other (without handrails in between and no gaps) and be able to SWITCH lanes to speed up. This was the system that Heinlein laid out in The Roads Must Roll. The system for accelerating used looks like a clever solution, though. I'm not sure how practical it would be to switch lanes in reality.
        • Well, if the existing travelator were to become the "slow lane" in a Heinlein Road, that would still work. The initial accelerating lead-in would get you up to 9Km/h, then stroll sideways to a faster strip.
      • Re:Transition (Score:2, Insightful)

        by sgups ( 449689 )
        This is all well and good but don't most people in airports and stations have some sort of luggage as well. Those could accound for most of the accidents.
    • by xA40D ( 180522 )
      The far left lane would move at the maximum speed, whereas successive lanes to the right would be decelerated.

      No, a better way would the to have the lanes getting faster as you move right. Just as driving on the left is superior, more logical, etc., etc.

    • Re:Transition (Score:4, Interesting)

      by lfourrier ( 209630 ) on Friday July 04, 2003 @09:44AM (#6366751)
      Already done, already in Paris, during 1900 universal exposition: a two lanes, two speeds walkway nTout.exe ?O=03300029&E=50
    • Re:Transition (Score:5, Interesting)

      by Anonymous Coward on Friday July 04, 2003 @09:50AM (#6366779)
      An easier way to do this woul be to do what they've done recently in Japan to solve this issue. They've got sliding panels as the tread that propels you. Toward the beginning and the end, the panels slide over each other, which slows down the railway. This is because each section of the railway lets a certain number of these sliding panels through per minute, but as they panels lap over each other, the speed needed to let the same number of panels through decreases. This is probably tricky to visualize.

      In the middle of the runway, the panels look like this (different numbers to indicate the different individual panels)

      ________22222222222________33333333333________4444 4444444

      (sorry about the multiple _s...I've never had to try and find an alternative for on /. before)
      At the ends, they slide together like this:


      So that even though the speed slows down, the panels don't squish each other, breaking the machine. I saw it on TV, and the dude was just whipping along the corridor. If they combined this system at a higher pace with the roller system they've got in France, they could probably take the speed up a fair bit.

    • Re:Transition (Score:3, Interesting)

      It seems to me that a better solution would be to have rotating disks at transistion points along the route. This way people could step onto the outer edge of the disk (where the outer angular velocity equals the linear velocity of the belt). They could walk into the center (where the angular velocity is much lower) and then step off into the center hole.

      Of course, the problem with this is that the disk would need to be enormously large to make the centripetal force reasonable.

      A quick calculation shows
    • Isn't that the way it's described in one of Asimov's books? (Or an SF novel by another author, I'm not sure, it's been a long time since I read it).
    • Re:Transition (Score:3, Informative)

      by Syre ( 234917 )
      Your "lanes" idea is a good one.

      Also an old one.

      This exact method of transportation is found in the Isaac Asimov novel "Caves of Steel", published in 1954.

      In that book (if memory serves me correctly), the fast lanes go at highway speed and have limited access on and off points.
  • Yeah. (Score:5, Funny)

    by Faust7 ( 314817 ) on Friday July 04, 2003 @09:13AM (#6366598) Homepage
    Am I the only one who would be embarrassed to use this simply by virtue of its name?

    "How are you getting there?"
    "Oh, I'm taking the travelator."
  • Very Neat (Score:5, Funny)

    by squaretorus ( 459130 ) on Friday July 04, 2003 @09:14AM (#6366599) Homepage Journal
    I read this this morning on the BBC and immediately booked a weekend in Paris for myself and my beloved - hey its summer, the flights were under 200 sterling return and I cant wait to see her fall on her arse as we get on this thing!

    I'm just hoping they dont stop you taking skateboards onto this thing!
  • Motorway speeds? (Score:2, Redundant)

    by gclef ( 96311 )
    It's unlikely you'll ever reach motoway speeds: wind resistance against a moving person at that speed will cause lots of problems (translation: you'll be on your butt somewhere around 40km/h). Also, it should be noted that the "bus speed" they list in the article is 9km/h. That's not exactly speedy by open road standards, but is probably pretty fast by congested downtown standards.
    • Wind resistance? Simple solution, just make sure everyone lies down...

      • by b1t r0t ( 216468 ) on Friday July 04, 2003 @11:39AM (#6367398)
        Better yet, let's put in seats for people to sit on. And then we could put groups of seats together on a fixed platform. At that point you don't need all the surface area, so you can propel the platforms from the edges.

        Here's the really cool (and tricky) part: then you put the motors inside the platforms themselves. Then you don't need miles long rubber belts that can wear out. Just replace them with concrete floors. And to keep people from falling out, add walls. If you add a roof, you can operate them outside, even when it's raining! And for more capacity (to make up for having the seats in the first place), you can use more than one platform stacked together.

        I think it would look something like this [].

    • About wind resistance: you could construct a tube around the travelator and then blow wind through it at the speed of the trottoir. Yeah, that might work.

      But think about the possibilities for gruesome injuries! Naa, this whole travelator concept only goes so far...

      I think I'll wait for my magnetic/antigrav boots, undulating floors, or at least small transportation capsules that go around through pipes. Maybe we should just redesign cities to accomodate more people more elegantly, that would be a start!
    • Am I the only one who doesn't have trouble standing up in a 25 mph headwind? It seems to me that the only problems at such speeds could be countered with hairspray.
    • 9kmh = 5.625mph. A slow jog.
  • Cool (Score:3, Funny)

    by spoonist ( 32012 ) on Friday July 04, 2003 @09:14AM (#6366603) Journal

    What an accomplishment!

    Did they smash a bottle of cheap Champagne [] over it to dedicate it?

  • by walmass ( 67905 ) on Friday July 04, 2003 @09:14AM (#6366604)
    US personal injury lawyers are already lobbying to bring this to the USA.
  • by itsme1234 ( 199680 ) on Friday July 04, 2003 @09:14AM (#6366611)
    "The real problem nowadays is how to move crowds; they can travel fast over long distances with the TGV (high-speed train) or airplanes, but not over short distances (under 1km)," he says.

    How about good ol' walking ?!
  • by F4Codec ( 619560 ) on Friday July 04, 2003 @09:17AM (#6366621) Journal
    So when can we see the first (Asimov) strip runners.

    Say, whats the bandwidth of one of these if you can stack boxes of DVD-RW on one end and take them off the other.


  • by Anonymous Coward on Friday July 04, 2003 @09:17AM (#6366626)
    ... in Futurama - where if they malfunction or you don't know how to get off them properly - you get spatted against the nearest wall???

    Pfft... tourist.
  • by jkrise ( 535370 ) on Friday July 04, 2003 @09:18AM (#6366629) Journal
    And what about moving WiFi hotspots?

  • Timeline (Score:5, Funny)

    by Faust7 ( 314817 ) on Friday July 04, 2003 @09:18AM (#6366633) Homepage
    Today: The introduction of the travelator eliminates the need for walking.

    10 years: Our legs become strange, archaic appendages that surgeons will handily remove for a small fee.

    100 years: Our brains float around in little hovering domes.

    I want a cobalt blue dome.
  • by James Durie ( 1426 ) on Friday July 04, 2003 @09:19AM (#6366638) Homepage
    I went Paris for the weekend in March and we went through Montparnasse one day and went on this travelator.

    They have guys watching to stop certain people getting on, I have heard they have had to pay out for injuries to some people.

    First it accelerates you to 9kph then it is exactly like a normal travelator only much faster.

    I loved it.

    The only problems are the acceleration and deceleration phases. It's very bumpy. You have to hold on to the rail. If they can fix those aspects these things will start appearing in airports everywhere.

    • How are the acceleration and deceleration phases done technically? Since it's a conveyor belt, they can't just slow down the whole thing once you move towards the end (as it would slow everybody down).

      I see two possibilities:
      1. At the end of the 9kph belt, there is a 6kph, and then a 3kph belt, and people have to jump from belt to belt
      2. The platforms that everybody stands on are collapsible: To speed up, they grow longer, and to speed down, the become shorter again.

      Could you enlighten us in this aspect?
      • I have also been on this travelator

        The accel/decel zones are like a number of ballbearings or something, which are rotating at gradually increasing speeds. This is why you need to keep both feet on the ground, because otherwise you could end up falling over.

        It's a configuration a bit like this:

        where the o's are cylinders and xs are gaps... they gradually accelerate you and then you sort of step onto the travelator moving at 9kph and the reverse happens at the o

  • by Savant ( 85811 ) on Friday July 04, 2003 @09:19AM (#6366639)
    It would seem to me that the sheer number of moving parts in a kilometre or so of walkway must make the chances of frequent failures pretty high compared to other public transport methods. How fault-tolerant is it? Any French Slashdotters able to answer?

    Would be interesting to see some schematics.
  • it's mechanical.. (Score:5, Interesting)

    by way2trivial ( 601132 ) on Friday July 04, 2003 @09:22AM (#6366655) Homepage Journal
    it's a poor solution..
    better would be organic, something like stomach cillia, where the floor doesn't move the length of the journey, but little tiny bits from in place do- not my idea, something I read once.

    the individual elements take turns dropping, moving a tiny bit, pushing up again, and moving you a tiny bit... done repeatedly= ya move down the floor- which doesn't move.

    less to break down, and spilled drinks and food (as long as they aren't too hot) are actually welcome...

    • by Anonymous Coward

      better would be organic, something like stomach cillia, where the floor doesn't move the length of the journey, but little tiny bits from in place do- not my idea, something I read once.

      the individual elements take turns dropping, moving a tiny bit, pushing up again, and moving you a tiny bit... done repeatedly= ya move down the floor- which doesn't move.

      We have that. It's called the sea. What you just described is known, in areas where the sea is generally warm enough, as "surfing".

  • ...And it's located in the tunnels beneath the Geneve airport. They've got a system like this there, but I'm not sure they run it at the same speed. At least I didn't think it was moving that fast when I used it. Quite fun, atually.
    I also use a similar thing in a local supermarket. All you'd have to do is crank up the speed on it to equal the Paris one, but then again, it's slighly elevated and I don't think people like being catapulted from the 2nd floor...

    Is this a reinvention of the wheel (Kakakaka! Tra
  • by FTL ( 112112 ) <slashdot.neil@fraser@name> on Friday July 04, 2003 @09:26AM (#6366673) Homepage
    I was at Toronto International airport last year and saw an Ethiopian woman and young child at the top of an escalator. They were clearly having problems. I took the hand of the child and helped her take "the big step". Presumably her first. She had no problems. Then I realised that I was helping the wrong person. The mother was now stranded at the top wondering what to do.

    Teavelators, escalators, revolving doors, they seem natural and intuitive to those who are used to them.

  • Expressways (Score:4, Interesting)

    by ariehk ( 215517 ) on Friday July 04, 2003 @09:27AM (#6366679) Homepage

    As an idea, these expressways are a fairly good way of transporting humans. They travel at constant speed, so there should be no obvious difference to the traveller, no matter what the speed is. Of course, in reailty we'd experience air resistence; try sticking your head out of the window on a car going at 70mph. but there may be some way of reducing this in enclosed tunnels, like blowing air at the same velocity as the floor is moving.

    In Asimov's vision (I think), the different-speed strips were parallel to each other, not serial like this French version. This meant that you's step to the side to go onto a faster strip, and keep going until you hit the fastest one, which could be several hundred miles an hour. As the differential in speed between the strip you are on and those near is never more than about 1mph, you won't do yourself any serious damage by falling over. see diagram:


    This structure makes them easier to 'network'. The only danger, I suppose, is if a strip breaks then the speed-differential between it and then next one could be massive.

    I suppose any serious implementation would use some kind of semiconductor thang to decrease friction, and on a wide scale could be very energy efficient. These things are probably more useful to society than a Segway, but you'd have to design a city around them from the ground up, so I doubt they'll change the way we live just yet.

  • Not that hot (Score:4, Insightful)

    by onthefenceman ( 640213 ) < minus physicist> on Friday July 04, 2003 @09:28AM (#6366683)
    When I first read "already as fast as a bus" I envisioned this thing cranking along at 30mph, people hanging on for dear life with the wind blowing their hair back. 9 km/h is a decent jogging pace, so maybe they are referring to the average speed of a bus in Paris. I am unimpressed.

    Besides, in the first month they are going to have at least one old lady fall on the exit rollers with her gigantic suitcase and 40 other people will be force-fed into the melee to create a giant writhing heap.

    All it will take is one idiot and his lawyer to mess it up for everyone else.
    • by SmallFurryCreature ( 593017 ) on Friday July 04, 2003 @12:23PM (#6367657) Journal
      Yup, fortunally this is france. Although they already been so weak as to pay damages, (do car manufacturers pay damages when you slam into a wall at the cars maximum speed?) hopefully they will be less susceptible to frivilous lawsuits.

      Just put a sign up that says you are using it at youre own risk and that the elderly, women and other idiots should just walk. Of course there should be a normal walkway to the side (if for no other reason then to allow maintenance)

      My fists start to itch when I read that stupid womans remark about her mother being scared. You don't have to fucking use it. I am tired of having the world fit itself to the lowest common denominator. This is a nice idea wich could solve some basic problems in large public areas like airports. Stupid people will always be falling over. Don't let the stupid people rule our lives.

  • This is a neat thing. I guess they're using it or have at least tried it out at a few other places around the world.

    I had read in a newspaper report some months back that authorities in Mumbai, India were planning to install this kind of 'travelator' to link two of the most important railway stations in Mumbai, Churchgate and CST. But I don't remember seeing any action on it since then.

    Btw, I would like to advise the travelator operators in Paris to hand out barf bags to people travelling on these contr
  • Wow! After I say goodbye to the wife Jane, my boy Elroy, daughter Jane, and pat Astro on the head, I can hop on one of these babies and start another productive day at Spacely Sprockets. Ain't the future grand?
  • by Pig Hogger ( 10379 ) <`moc.liamg' `ta' `reggoh.gip'> on Friday July 04, 2003 @09:33AM (#6366702) Journal
    It's not really a big innovations. The French did it 103 years ago, during the 1900 exhibiton. A rolling sidewalk [] was running along the exhibition and was whisking visitors at about 8 km/h. It was composed of two side-by-side rolling sidewalks [] one going at half the speed as the other.

    If you ask me, this was a much better design than the neck-breaking jallopy installed in Montparnasse Station...

    They also experimented some 30 years ago with one that was shaped like an integral sign; instead of a rubber plate, there were solid plates which slide sideways at the end, effectively yielding a slower speed but without the jarring hells-on-wheels acceleration.

    • by Anonymous Coward
      Yep. And I live in Paris. In the last 6 months or so, I went to Montparnasse station about 10 time, and have _never_ seen the High Speed Travelator working (always closed because they were 'fixing' it).

      There have been a lot of stories in the newspaper about it. Basically, it doesn't work. A waste of money, specially considering the lack of escalators in most of Paris metro stations...
  • I tried it (Score:4, Informative)

    by ( 40893 ) <> on Friday July 04, 2003 @09:33AM (#6366705) Homepage

    I live in Paris and tried it a while ago. It works like a charm. The acceleration and deceleration are surprisingly smooth provided you keep your feets on the ground. Then it is exactly like a normal conveyor mat. I like it and I see no drawbacks.

  • How about we use this idea for certain roads where Point A and Point B are 400 miles away...


    Drive your car onto Interstate 95 where a rubber coated ramp picks up the car. There would be 3 lanes... Left would be fastest, if you knew that you would be on the road for a while... Middle for those that don't need to go to far (one city to another)... Right is slowest for those who would be getting off soon and transferring onto an exit conveyor where the speed would gradually reduce to normal commuting
  • , 1299,DRMN_15_2087992,00.html

    As usual, some people just can't seem to get along. ;~)

    Personally, I think more could be done with this concept. If the center, fastest "strip" was a sit down type one, wouldn't this really be nothing more than a permanently available, perpetual people bus. Think about it, moving McDonalds, talk about fast food!

    As well, these conveyers could easily be constructed as subways. I can also see these being used at large exhibition
  • One of the main hobbies of people in Paris is sitting in sidewalk cafes watching people go by. If this invention catches on, what will happen? Will people sit in the cafes and people will go wooshing by, or will the cafe also be on the moving part?
  • MagLev (Score:2, Interesting)

    by Becquerel ( 645675 )

    Why don't they use something like a maglevel/chairlift. On which individual carriages are propelled (at any acceleration you like :-) down a track that doesn't have the limitation of being flat and straight.

  • by sharkey ( 16670 ) on Friday July 04, 2003 @10:38AM (#6367053)
    No! I thought, uh, I thought I'd chauffeur myself this evening. Yes, that's what I thought. How difficult could it be? I'm sure the manual will indicate which lever is the velocitator and which the deceleratrix, hmm?
  • by HighOrbit ( 631451 ) on Friday July 04, 2003 @11:53AM (#6367476)
    How can this even get off the ground if future cities are designed around the Segway AKA Ginger? Ginger is the future "Human Transporter" . Ginger is "IT" !. Steve Jobs told me so! There's no place for something like this.

    Seriously though, I think the *real* future is in hydrogen fuel cell vehicles (whether they be private cars or public buses) for three reasons. First, that's where all the serious R&D money is going right now. Secondly, they require no great leap of concept and will be more psychologically acceptable to the public (i.e. its just a car with a different engine as opposed to something strange and possibly "dangerous"). Third, other than adding hyrdogen pumps to existing gas stations, they requie no expesive and massive public works project because they can use the current road infrastructure. The gas station problem can be handled by a government regulation on the lines of "if you run a gas station and have more than two pumps, at least one has to be for hydrogen".

    Now if they could jack up a fuel cell powerful enough for a jet engine capable of inter-city/cross-country transport, we'd be set.
  • by Animats ( 122034 ) on Friday July 04, 2003 @12:55PM (#6367866) Homepage
    There have been many attempts to solve the speed transition problem for moving sidewalks, going back to the Paris Exposition of 1900. The usual idea is to have a speed transition between two conveyor belts, and the usual problem is to avoid someone getting caught or tripped at the transition point.

    The Loderway Accelerating Walkway [], circa 1998, used multiple belts at different speeds. The transitions between belts involved a 5mm drop and small-diameter end rollers [], instead of a transition plate. That was probably the simplest solution to the problem. Two systems were installed in Australia, field tests were claimed to be successful, but the manufacturer no longer seems to be around.

    NKK [] (yes, the zipper company) and Mitsubishi have both built prototype "accelerating moving walkways", but neither system seems to have been installed more than once. NKK's system involves expansible plate-type steps that become longer in the high-speed section. The Mitsubishi [] system works by turning a corner, so that a series of short wide plates transform into a series of long narrow plates. Both of these systems avoid difficult transition points, but are complicated and expensive throughout the whole length of the system. The Loderway and Paris systems have transitions, which adds risk, but the long section is just a plain belt, so the cost of long systems is manageable.

  • by lpq ( 583377 ) on Friday July 04, 2003 @05:06PM (#6369095) Homepage Journal
    Seems like the French aren't afraid to try techno-miracles -- I haven't seen any metro system as good -- London is close, but alot of inconsistencies. In Paris and France, they aren't afraid to try new things (and the US still
    doesn't have any high-speed trains....bunch of cowards -- look big behind
    their high-tech weapons -- but when it comes to something socially useful...
    forget it. It was a shame the French became the only company to provide
    Super-Sonic speeds on jets -- and, of course, what did we do in the US?
    We banned their use in US airspace because Elmer's cow might stop producing
    milk from the occasional bang. Big woop. We could have had coast-to-coast
    in 2-3 hours, but noooOOOOOooo.... any real R&D goes to defense where
    they don't have to worry about every soldier who breaks a nail suing them.

    Americans are just so damn stupid so often....that and greedy. Grrr.

    Why can't the US every take the lead in these areas --- because it's always
    private development and unless the private developer can prove profit (minus
    real or bogus lawsuits) before it is even tested, it falls dead on the design

    I really thought the Casino bosses in Las Vegas just might pull off the
    high speed train idea to L.A. But it's been ages since I heard that idea

    Everyone in the US seems to want to have the right to stop progress that can benefit large numbers of people -- like all the poltics with the "Rich"
    who can buy their congressmen in Menlo Park/Palo Alto and don't want BART
    to go through their town -- we were promised it would circle he Bay and have
    been paying sales tax to support it since...when, 1970's? Everything
    is politics and self-interest.


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