What is a "coupler" on a train, and how does it work?

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  How fast does the average London Underground train go between stations?
  by PokerPaul on June 30th, 2005 | 1 person likes this

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  What is the steepest gradient an ordinary train can climb?
  by Mawgan on February 9th, 2008 | 1 person likes this

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  If train A leaves the station at 7:30 traveling 15 mile an hour and train B leaves the station 9:00 what time do they cross track C. Which is 50 miles away... Who else hates these questions?
  by Untamed on September 8th, 2008 | 1 person likes this

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  I'm moving to Perth from Sydney and want freight my things over by train. I can't seem to find a company that will do it. Does anyone know one?
  by Lish12 on December 19th, 2007 | 2 people like this

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  What is the average speed of a freight train?
  by kusuri on October 23rd, 2007 | 1 person likes this

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