Canadian National MLW RSC24 diesel locomotives

RSC24 diesel locomotive in yard with highway overpass

  Montreal Locomotive Works RSC24 diesel locomotives were “conceived of cannibalism.” So went a claim in the April 1977 issue of Trains. Montreal Locomotive Works had encouraged Canadian National to upgrade its older, 1,600 hp road switchers with new 12-cylinder, 251-type prime movers. Four of its 244-type prime movers were recycled into the new RSC24 […]

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Seeking answers on ‘loss of shunt:’ Special Report

Closeup of locomotive wheelset with antenna mounted next to rail.

Second of two parts Part one of this report appeared Tuesday, Sept. 5 EFFINGHAM, Ill. —The latest round of tests investigating ways to ensure trains always activate track circuits — the process known as “shunt” — involves shunt-enhancing antennas mounted on both trucks of a state-owned locomotive in Amtrak service in California. Here’s how the […]

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The quest to counteract ‘loss of shunt:’ Special Report

Amtrak train with Charger locomotive and Superliner cars

First of two parts EFFINGHAM, Ill, —What happens when electrical current connected with signal systems doesn’t reliably travel from one rail to another when a train passes? Dispatchers “lose” the train — it disappears from their screens — and warning lights don’t flash or gates don’t lower at highway crossings as the train approaches. The […]

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News photo: Not the usual end of train

Red and black locomotive and three passenger cars on end of intermodal train

HAMILTON, Ontario — Canadian National train No. 148 passes Bayview Junction on the Dundas Subdivision on Aug. 28, with AC44C6M rebuild No. 3309 serving as the distributed power unit, followed by three cars from the railroad’s business-train fleet. Reports are the business train equipment is to operate out of Montreal later this month. — Stephen […]

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