High-speed Walkways
In the 1970s Dunlop developed the Speedaway system. It was in fact an invention by Gabriel Bouladon and Paul Zuppiger of the Battelle Memorial Institute in Geneva (Switzerland). A prototype was built and demonstrated at the Battelle Institute in Geneva in the early 1970s, as can be attested by a (French-speaking) Swiss television program entitled Un Jour une Heure aired in October 1974. The great advantage of the Speedaway, as compared to the then existing systems, was that the embarking/disembarking zone was both wide and slow moving (up to 4 passengers could embark simultaneously, allowing for a large number of passengers, up to 10,000 per hour), whereas the transportation zone was narrower and fast moving.
The entrance to the system was like a very wide escalator, with broad metal tread plates of a parallelogram shape. After a short distance the tread plates were accelerated to one side, sliding past one another to form progressively into a narrower but faster moving track which travelled at almost a right-angle to the entry section. The passenger was accelerated through a parabolic path to a maximum design speed of 15 km/h (9 mph). The experience was unfamiliar to passengers, who needed to understand how to use the system to be able to do so safely. Developing a moving hand-rail for the system presented a challenge, also solved by the Battelle team. The Speedaway was intended to be used as a stand alone system over short distances or to form acceleration and deceleration units providing entry and exit means for a parallel conventional (but fast running) Starglide walkway which covered longer distances. The system was still in development in 1975 but never went into commercial production.
Another attempt at an accelerated walkway in the 1980s was the TRAX (Trottoir Roulant Accéléré), which was developed by Dassault and RATP and whose prototype was installed in the Paris Invalides metro station. The speed at entry and exit was 3 km/h (2 mph), while the maximum speed was 15 km/h (9 mph). It was a technical failure due to its complexity, and was never commercially exploited.
In the mid 1990s the Loderway Moving Walkway company patented and licenced a design to a number of larger moving walkway manufacturers. Trial systems were installed at Flinders Street Station in Melbourne and Brisbane Airport Australia. These met with a positive response from the public, but no permanent installations were made. This system is of the belt type, with a sequence of belts moving at different speeds to accelerate and decelerate riders. A sequence of different speed handrails is also used.
In 2002, an experimental high-speed walkway was installed in the Montparnasse—Bienvenüe Métro station in Paris. At first it operated at 12 km/h (7 mph) but due to people losing their balance, the speed was reduced to 9 km/h (6 mph). It has been estimated that commuters using a walkway such as this twice a day would save 15 minutes per week and 10 hours a year.
Using the high-speed walkway is like using any other moving walkway, except that for safety there are special procedures to follow when joining or leaving. When this walkway was introduced, staff (seen here in yellow jackets) determined who could and who could not use it. As riders must have at least one hand free to hold the handrail, those carrying bags, shopping, etc., or who are infirm, must use the ordinary walkway nearby.
On entering, there is a 10-metre acceleration zone where the 'ground' is a series of metal rollers. Riders stand still with both feet on these rollers and use one hand to hold the handrail and let it pull them so that they glide over the rollers. The idea is to accelerate the riders so that they will be traveling fast enough to step onto the moving walkway belt. Riders who try to walk on these rollers are at significant risk of falling over.
Once on the walkway, riders can stand or walk. Owing to Newton's laws of motion, there is no special sensation of travelling at speed, except for headwind.
At the exit, the same technique is used to decelerate the riders. Users step on to a series of rollers which decelerate them slowly, rather than the abrupt halt which would otherwise take place.
In 2007, a similar high-speed walkway was opened in the newly opened Pier F of Pearson International Airport in Toronto, Canada. This walkway is of the pallet type rather than the belt type. The pallets "intermesh" with a comb and slot arrangement. They expand out of each other when speeding up, and compress into each other when slowing down. The handrailings work in a similar manner. The walkway moves at roughly 2 km/h when riders step onto it, speeds up to approximately 7 km/h for the bulk of the length, and slows to 2 km/h again at the end.
In May 2009 it was announced that because of its unreliability and the number of users having accidents, in 2011 the Parisian high-speed moving walkway will be replaced with a standard moving walkway.
Read more about this topic: Moving Walkway, Designs