A corridor coach is a type of railway passenger coach divided into compartments and having a corridor down one side of the coach to allow free movement along the train and between compartments.[self-published source?]
These were first introduced, in Britain at least, around the start of the 20th century, because the advent of dining cars made it advantageous to enable passengers to move down the length of a train. This was achieved by linking the corridors of adjacent coaches using a "corridor connector".
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