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U-Roadbed is a U-Shaped roadbed for railways in platform sections, where passenger is easily to fell into the tracks, it could be the last chance for passengers who fell into the track to save themselves.
Unlike normal roadbeds which have shallow pit, the U-Roadbed is U-shaped, the space it creates in the center could accommodate a person lying down, without being hurt when run over by a train, and the groove between two neighboring components can be used to fasten the body.