Double heading

A double headed U.S. passenger train of the 1860s

A double headed steam excursion train in Iowa, September 2006

In railroad terminology, double heading indicates the use of two locomotives at the front of a train, each operated individually by its own crew. The practice of triple-heading involves the use of three locomotives.

Double heading is most common with steam locomotives, but is also practised with diesel locomotives. It is not strictly the same practice as two or more diesel or electric locomotives working 'in multiple' (or 'multiple-working'), where both (or all) locomotives are controlled by a single driver in the cab of the leading locomotive.

单词	Pilot Engine
释义	Pilot Engine 英语百科 Double heading In railroad terminology, double heading indicates the use of two locomotives at the front of a train, each operated individually by its own crew. The practice of triple-heading involves the use of three locomotives. Double heading is most common with steam locomotives, but is also practised with diesel locomotives. It is not strictly the same practice as two or more diesel or electric locomotives working 'in multiple' (or 'multiple-working'), where both (or all) locomotives are controlled by a single driver in the cab of the leading locomotive.
随便看	emergency cart的意思 emergency case的意思 emergency category的意思 emergency ceiling的意思 emergency cell的意思 emergency center的意思 emergency centre的意思 emergency chamber的意思 emergency change advisory board的意思 emergency changeover的意思 emergency chiller的意思 emergency chute的意思 emergency circulation的意思 emergency circumstances的意思 emergency classification for nuclear power plant的意思 emergency close的意思 emergency closing device的意思 emergency closing devices的意思 emergency closing valve的意思 emergency closure的意思 emergency cock的意思 emergency coke bin的意思 emergency cold starting的意思 emergency cold starting test的意思 emergency combat capability的意思

Pilot Engine

Double heading