
Image by Steven Dale.
True story:
While I was touring the Caracas Metrocable earlier this year, myself and my guide were joined by an elderly gentleman in our gondola. Via my guide, I asked the man how he felt about the system. Did he like it? Any complaints?
He said he loved it – except for all the time the gondolas spend in the stations.
When I looked back at my records, it appears that the man had a point. During my tour of the system, I recorded end-to-end travel times of apx. 14 minutes. 5 of those minutes were spent in the three intermediary stations, meaning more than a third of the trip is spent in stations. Dwell times were roughly 1.5 minutes at each station.
Dwell times are something the cable industry isn’t adept at handling yet and that needs to change. Based upon conversations I’ve had with cable engineers, the consensus is that dwell times can be reduced down to 20-30 seconds. Given that such dwell times have been observed in large detachable chairlifts around the world, there’s no reason to believe this isn’t true.
But for whatever reason, the industry tends to install systems with station dwell times of a minute or more.
This wasn’t something unique to Caracas, either. I witnessed similar dwell times with both the Medellin and Caracas Metrocables, suggesting this issue isn’t company specific (Poma built the Medellin system, Doppelmayr the Caracas system).
My guess is that dwell times are not something the cable industry has really actively dealt with in the past. After all, most ski lifts are point-to-point installations. Dwell times simply don’t factor into the equation on most ski hills.
Furthermore, in a ski lift situation, you probably would want dwell times of 1-2 minutes. Given all the equipment, gear and clothing skiers require, more time is needed to board and alight – especially when you consider how slow people move in ski boots.
But we’re not talking about ski hills here. We’re talking about transit and most commuters don’t wear ski boots.
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