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MLW M-420
The Montreal Locomotive Works M-420 is a diesel-electric locomotive built between 1973 and 1977 in Montreal Quebec, Canada. A total 88 units were built for Canadian railways, including 8 B-units built for the British Columbia Railway; most of production went to the Canadian National Railway.〔(【引用サイトリンク】 url = http://www.thedieselshop.us/MLW_M4.HTML )〕 Only seven units were sold outside of Canada, to Ferrocarriles del Estado in Venezuela and Providence and Worcester Railroad in the United States.
The M-420 was one of the first locomotive models (along with the GMD-built GP38-2) to use the wide-nosed Safety (or Comfort) Cab, pioneered by Canadian National Railway. By the early 1990s, variations on this cab design had become the standard of the industry. As with wide-nosed GMD units from the same period, references to the model commonly add a "W" at the end of the model name, but it is not part of the official model designation. Most M-420 units rode on MLW ZWT (Zero Weight-Transfer) trucks.
== Variations ==
Other variations of the M-420 were the M-420R, the M-424 built for service in Mexico and the M-420TR switcher. The M-420R was built for the Providence and Worcester Railroad using trade-in parts and rode on Type B trucks, but otherwise resembled the M-420. The M-424 was an M-420 with dynamic brakes uprated to . The M-420TR was built in two variations, with two M-420TR units sold to Roberval and Saguenay Railway and fifteen slightly different units (sometimes referred to as M-420TR-2) sold to Ferrocarril del Pacifico. Both M-420TR variations bore little resemblance to the other models, with a lowered hood, shorter frame and end-cab design.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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