The rails approaching the headwall of bay platforms at York station are embossed with this zig-zag pattern as a safety measure. They causes a lot of noise and vibration, so there can be no doubt that the end of the line is approaching. It is possible they assist breaking by providing extra friction, but I don't know.
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Photo by <a href="mailto:cmckenna@sucs.org?subject=rail-photo at railfaneurope.net">Chris McKenna</a>25/02/2006.<br>
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