Doppelmayr Introduces TRI-Line Three Cable System

A Swiss ski resort will become the launch customer for a new hybrid ropeway design by Doppelmayr. TRI-Line (pronouned “treeline”) will combine the benefits of a tri-cable 3S ropeway with Doppelmayr’s D-Line detachable generation. The new system offers throughput of up to 8,000 passengers per hour with a smaller footprint and lower cost than a 3S. “The TRI-Line is a detachable continuous-movement system and a compact further development based on two proven ropeway systems,” explains Peter Luger, head of TRI-Line development in Wolfurt. “It combines the benefits of the D-Line with those of the high-capacity 3S system.” The concept is similar to Leitner’s new 2S system but utilizes two track ropes rather than one. Doppelmayr notes two track ropes provide a stable running surface and the highest wind stability. Multiple ropes allow for very long spans between towers, a hallmark of 3S systems.

TRI-Line cabins will combine elements of CWA’s newest Omega V gondolas with those of Atria 3S cabins. The new cabins will accommodate up to 20 passengers in a 12 seated, 8 standing configuration. The carriage will utilize two D-Line detachable grips and eight running wheels. Cabins can be ordered with electronic sliding doors on two sides for high capacity and urban applications.

TRI-Line will utilize D-Line stations modified to accommodate track ropes and larger carriages. The new system will feature tubular towers rather than lattice towers. In addition to reducing tower footprints, this brings advantages in the construction phase such as the suitability of the components for air transport. Direct Drive gearless technology, Doppelmayr Connect controls and AURO autonomous operation are all compatible with TRI-Line.

The first TRI-Line installation is already underway at Hoch-Ybrig, Switzerland replacing a 55 year old reversible tramway. “With the TRI-Line, we’ve found a ropeway system that meets all our requirements – and does so for a reasonable price,” said Urs Keller, CEO of Hoch-Ybrig. “While a monocable gondola would have been an option from a technical point of view, it would have entailed various challenges with our particular terrain and therefore been difficult to build. The 3S lift, as an alternative, was beyond our budget. The TRI-Line is compact and can cope with our wind conditions thanks to the 3S benefits, which is a decisive criterion for our important feeder lift. Thanks to the new cabins with their comfortable seats and the generously proportioned glazing, we can now offer our guests a far higher level of comfort.”

23 thoughts on “Doppelmayr Introduces TRI-Line Three Cable System

  1. icefaceny September 7, 2022 / 9:03 am

    I bet there will be some massive towers on these lifts! Very exciting especially for the urban application aspect considering the high throughput of people and the flexible design. I wonder if Paris or LCC will opt for TRI-Line considering those projects are still in the early phases of planning?


  2. conradmward September 7, 2022 / 9:39 am

    8,000 passengers per hour. Great news for urban applications!


    • Paul Hothersall September 7, 2022 / 11:14 am

      I am assuming that could be 4000 per direction, and also in the single load side and with their 12 seated / 8 standing config??? Still 2400 for all seated per direction is still good for all the benefits that come with the 3S-Mini


        • Paul Hothersall September 7, 2022 / 11:37 am

          Thats truely game changing then.

          Many resorts parking and capacity issues could be easily solved using such a lift from a dedicated car park and rapid uplift.

          the LCC to Snowbird/Alta would be perfect for this vs 3S as an example?

          Liked by 1 person

        • skitheeast September 7, 2022 / 12:56 pm

          If it is also cheaper than a 3S, it would lower the cost of the LCC gondola (a big concern of skeptics).

          I hope these have more success in North America than the 3S design!

          Liked by 1 person

        • Somebody September 7, 2022 / 3:02 pm

          That’s incredible. Is top speed mentioned anywhere? Or is the spacing just closer?


        • Ryan September 7, 2022 / 5:22 pm

          If they somehow manage to get the Gondola system up the canyon in Utah, This could be a great solution for that… don’t you think?


        • Aussierob06 September 12, 2022 / 8:35 pm

          @Paul Hothersall. You will well know how no one wants to stand for the 25 minute ride up the Whistler Village gondola. I can promise you all no one will want to stand for the 37 minutes (in ski boots) for this ride. 12 seated passengers will be the maximum. 4800pph.


  3. Calvin September 7, 2022 / 7:55 pm

    Is it me or is this basically a copy of Poma’s latest 2S design but with a second track rope?


    • Tyler Nicholds September 7, 2022 / 9:00 pm

      *Leitner’s 2S design


    • Aussierob06 September 8, 2022 / 9:07 am

      Doppelmayr have previously built 2S lifts. I’m not sure it’s copying, just evolving previous designs, of which there are limited configurations.


  4. DBund September 7, 2022 / 9:48 pm

    Among other projects being discussed that could benefit from this, the Timberline/Government Camp gondola could use the extra capacity and wind resistance.


  5. Alex September 7, 2022 / 11:48 pm

    Total speculation but would be an interested solution to replace Eaglebahn/Born Free at Vail.

    Liked by 1 person

    • terryrosenbaum September 20, 2022 / 6:21 pm

      Two parallel lifts provides backup capability in case one goes down. The Eagle Bahn is also the main cargo hauler for all on-mountain restaurants.


  6. AG September 8, 2022 / 2:13 am

    I’m not trying to knock their capacity claim, but 8000 pph sounds like a number generated with no incorporation of crowd coordination/cueing. It just seems so out of reach for the general public without invasive steps to keep the boarding constantly cued. The industry still has a hard time reaching half that capacity with a conveyor that delivers people to the carrier. Can you imagine 8000 pph in both directions, a peak of 16k an hour transiting through a D-Line terminal….maybe with the flow through cabins and an elaborate terminal design but yikes, still sounds like a nightmare.


    • Aussierob06 September 8, 2022 / 9:04 am

      8000pph is the theoretical maximum. 20 passengers per cabin at a 9 second interval. As you noted, operators rarely achieve that, and lifts typically aren’t run at full speed.


  7. Aussierob06 September 8, 2022 / 9:10 am

    I’m looking at the traction plate on the carriage and hoping there is enough friction there for all the weight its going to be accelerating\decelerating.


  8. Erik S September 8, 2022 / 8:10 pm

    That new TriLine system is very clever especially when UDOT chose the gondola for the final EIS for LCC, the new system will have WAY more mobility than the Enhanced Bus while keeping it the same reliability.


  9. Philip Keeve September 9, 2022 / 12:01 am

    This looks promising for new applications! Especially in Utah…


  10. skitheeast September 9, 2022 / 11:27 am

    A light rail with 200 people per car and 2 cars per train running at a 3 minute frequency would be one of the highest capacity light rail systems in the United States and carry 8,000 pph. It would also likely average 10-30 mph and cost over $100 million per mile to build. This has the same 8,000 pph capacity, runs at 19 mph, will likely cost well below $100 million per mile, and needs fewer personnel to run. This could be a game changer for urban areas that are not big enough to justify high spending for a light rail system (let alone a subway/metro).


  11. Scott Young September 9, 2022 / 1:25 pm

    It’s amazing how little public resistance there appears to be regarding lift installations in Europe. Seems like they can put up whatever lift they want wherever they want. I wish the US was a more forgiving in this area.


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