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Roosevelt Island Tram Modernization Project

Project Benefits

The new tram features a remade operating system - a "dual haul" mechanism.  The previous "single haul" system was comparable to the operation of a mechanical clothesline because both cabins had to travel along the cable loop at the same time, each cabin ending its trip at the opposite side.  As a result, both cabins had to be operational during non-peak travel times and both had to be taken out of operation to perform maintenance on any one part of the system.  In contrast, the new dual haul system enables the cabins to travel independently, allowing for greater scheduling flexibility during both rush and off-peak hours.  It also permits maintenance on one side while the other remains operational.  Furthermore, an automatic rescue system uses auxiliary power sources in the case of an outage to return cars to the nearest station, eliminating the need for rescue equipment.  Specifically, the benefits of the new system include the following:

  • Increased reliability because when one car is out of service the other can continue carrying passengers.

  • A service life extended by 30 years.

  • An integrated rescue system that, in the event of a malfunction of a component or power source, ensures the cabin cars' safe return to the nearest station using redundant power and motive systems, avoiding high level emergency rescue operations.

  • Reduced downtime for maintenance and repairs again due to the ability of one line to continue operating while the other is serviced.

  • Greater efficiency in energy use, maintenance time, and operating costs.

  • Improved quality of travel, providing a smoother ride under high winds due to new, more stable, wide track rope gauge.
     

New Tram

Roosevelt Island Tram System. Due Fall, 2010

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