Frozen Switches/Switch FailureSwitches allow trains to move between different sets of tracks and are placed at numerous locations across the system. Snow and ice build-up can block and freeze a switch and prevent it from working.
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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.
Absolutely they do. It becomes quite a problem with low traction situations such as wet, frosty, icy, or debris covered rail, and can be compounded by pulling heavy trains and lower hp/t, requiring a higher power setting which requires more traction.
The two methods to minimize ice build up are through the use of direct heating and spraying water. The first, and more common method is to directly heat the rails. Electrical equipment can just add heating coils to melt snow and ice in the immediate area.
Tracks are affected by extreme cold in two ways. In some cases the tracks experience what's called “pull-aparts.” This kind of rail defect occurs when two rails separate at their connection. The extreme cold shrinks the metal and the rails literally pull apart from each other, Metra said in a recent Instagram post.
One instance is where the railway track is at a slightly higher level than the road approaches on either side. A long vehicle such a s a low loader can become grounded on the “hump”. Another situation is where, at a level crossing, a driver mistakenly leaves the road and turns onto the tracks.
It's the switches that direct the cars between tracks that freeze, and when a switch fails, it can compromise an entire line. To keep the switches functioning, the Long Island Railroad uses the centuries-old method of burning kerosene or natural gas to keep everything running.