Why most US locomotives have single cab while European ones have dual cabs?


Most US locomotives have single cab. This creates a visibility problem when operating long hood forward mode (visibility is usually ok while operating short hood forward mode). However, it is quite rare for US locos to operate solo – they mostly work in pair (sometimes upto 3-4 units together as well). As a result, they rarely run as long hood forward mode in real life.

But in Europe, the overall weights of trains are lighter and thus often trains are pulled by just single locomotive. Here both forward/reverse operation is desired. Thus European locos need good visibility in both directions (otherwise they would need turntables which are now obsolete after steam loco era).

Countries which imported American locos (like common WDM style locos in India, licensed from ALCO) but often runs as single units, visibility is indeed a problem while running in long hood forward mode.

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