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Why some trains are pulled/hauled by twin/double locos  
1 Answers
May 14 2013 (09:30)
Locomotives

Entry# 1571     
amit singh ™ ♥♪ ♫♥*^~
Why some trains are pulled/hauled by twin/double locos

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May 14 2013 (06:06)
Blog Post# 750459-9     
amit singh ™ ♥♪ ♫♥*^~   Added by: amit singh ™ ♥♪ ♫♥*^~  May 14 2013 (09:30)
Few points why KK is hauled by twin locos...
1.The most common reason is the need for additional motive power when a single locomotive is unable to haul the train due to uphill grades, excessive train weight, or a combination of the two.
2.Double-heading is also used on passenger trains when one locomotive could suffice but would not be fast enough to maintain the schedule.
3.More
...
more...
rarely, double-heading is used to guarantee a service when they have been aware of the poor quality of their locomotives, on the understanding that if one engine failed in service, the other would suffice to get the train to its destination.
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