Designation of multiple units as a locomotive

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Designation of multiple units as a locomotive

Postby BostonUrbEx » Sun Feb 28, 2016 12:51 pm

At what point does something become a locomotive? If I have two DMU's, but only one has an actual cab to operate from, are they both classified as locomotives and subject to the same tests and testing schedules? If the lack of an operating cab is not the difference, is it the presence of an engine? What if we say these are now EMU's: will the EMU without a cab be a locomotive? It would only have traction motors, no engine.

I'm sure the answer is probably murky at best, but surely there must be an answer since there's actual examples (except maybe a cabless DMU?).
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Re: Designation of multiple units as a locomotive

Postby DutchRailnut » Sun Feb 28, 2016 1:46 pm

any rail vehicle with propulsion or control equipment is a locomotive, be it EMU, DMU, cab car, or A or B unit Locomotive.
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Re: Designation of multiple units as a locomotive

Postby mtuandrew » Sun Feb 28, 2016 8:53 pm

Moderator's Note: Moved to General Discussion: Locomotives, Rolling Stock, and Equipment.
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Re: Designation of multiple units as a locomotive

Postby BostonUrbEx » Mon Feb 29, 2016 12:18 am

DutchRailnut wrote:any rail vehicle with propulsion or control equipment is a locomotive, be it EMU, DMU, cab car, or A or B unit Locomotive.


So a coach in an Acela set is designated as a locomotive? (They do have traction motors, right?)
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Re: Designation of multiple units as a locomotive

Postby chrisf » Mon Feb 29, 2016 7:56 am

BostonUrbEx wrote:
DutchRailnut wrote:So a coach in an Acela set is designated as a locomotive? (They do have traction motors, right?)

Acela coaches are not motorized. Only the power units provide traction power.
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Re: Designation of multiple units as a locomotive

Postby R36 Combine Coach » Tue Mar 01, 2016 12:47 am

In the case of married pair passenger MUs, are there FRA cab cards (ICC "blue forms") in both cabs or does a pair require only one cab card?
Since my friend continues to chain smoke nonstop, she is probably an Alco.
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Re: Designation of multiple units as a locomotive

Postby DutchRailnut » Tue Mar 01, 2016 8:50 am

each MU car in married pair has its own blue card.
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