Direct Drive
A system of power transmission in which there is a direct connection between the engine or motor and the driving wheels.
Most have direct drive axles and some have gear driven axles.
Traction supply: The supply for the driving traction motors of electric trains.
Trailing: A turnout is trailing if the two legs of that turnout merge in the direction of travel.
 See also: Power Unit, Board, Freight car, Container, Train
  
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