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The original Westinghouse Air Brake was founded in 1869 by George Westinghouse shortly after he successfully demonstrated the first straight air brake systems to the railroad industry. Three years later, Westinghouse developed the first automatic air brake system, which had a built-in safeguard whereby the brakes on the entire train would apply automatically if the train should separate or if air pressure should escape due to leakage in the system. This system was first installed on a Pennsylvania Railroad passenger train in Pittsburgh in 1872, and its efficiency dramatically improved the safety and popularity of rail transportation in North America. <br /> <br />taken from wabtecs site to put the three hundred year thing to rest. And 6 lash up one wrong way is not a DP scenario. although a dp unit can definately be set up to go the oppisite direction. In order for the six unit going wrong way with one someone would have to create this situation theres just not enough loop holes to have it happen otherwise .....you have to miss mu'ing the engine have the engine to run backwards set up independantly and not part of the consist and have someone actualy release its breaks move the reverser etc etc... just not plausible even.
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