Do trains still run when it snows?

Even when ice glazes the landscape or temperatures dip dangerously low, railroads run 24/7. Maintaining operations in the face of Old Man Winter isn't easy, but with careful planning, experienced and dedicated crews, and specialized equipment and technology, railroads keep serving customers winter after frosty winter.



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It will depend on the initial momentum of the train (speed and/or weight) and what type of snow. Powder, like skiers love, will basically blow away. The opposite type is a hardpacked drift in a shallow cutting. The latter has been known to to derail a train, which then stops really quickly.

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This means the trains must operate at much slower speeds to safely travel. Snow, freshly fallen or in days-old drifts, produces its own set of problems. It can get sucked into the engine, where it then melts and shorts out major components.

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There are actually gas burners right next to the switches, Michael Gillis, Director of Communications for Metra, says. It's like it's like a kitchen stovetop, the gas stovetop. The switch heaters are located alongside the train tracks to keep them heated all winter long.

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The main reason is because buses and trains are enclosed spaces, so the HVAC (heating, ventilation and air conditioning) system has to be kept on to ensure proper air circulation for everyone on board.

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To help the wheels stay on the track their shape is usually slightly conical. This means that the inside of the wheel has a larger circumference than the outside of the wheel. (They also have a flange, or raised edge, on the inner side to prevent the train from falling off the tracks.)

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But railways suffer unique problems. When jammed with ice, mechanical switches can become unmovable. Overhead wires may snap. Amtrak's electric lines “are like any piece of metal—when they get cold, they get shorter,” says Augustine Ubaldi, a railroad engineering expert with Robson Forensics.

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Do trains drop waste on the tracks? Not anymore. In the US until the 1960's, some toilets emptied directly onto the tracks. A sign was posted over the toilet reminding passengers not to flush while the train was on the station.

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Switchers idle for several reasons. Some of the most common reasons include ensuring the engine is ready for immediate use, avoiding difficult start-ups due to a cold engine or a weak battery, and preventing freezing inside the engine. Locomotive engines do not use antifreeze.

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Trains can't stop quickly or swerve. The average freight train is about 1 to 1¼ miles in length (90 to 120 rail cars). When it's moving at 55 miles an hour, it can take a mile or more to stop after the locomotive engineer fully applies the emergency brake.

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Tiffany-Ann Taylor, the vice president for transportation at the Regional Plan Association, said that most subway platforms, barring the new ones such as at Hudson Yards, are hot because the air-conditioning on the trains generates heat that is pushed onto the subway platforms and then trapped.

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