Steel rail has 3 rail base defects: bottom defect, scab and bottom crack.

钢轨轨底缺陷有三种：底伤、结疤和底裂缺陷。

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Mr Patel had been managing controls for junctions and level crossings for a very large area from a Network Rail base in Peterborough on 3 October, 2011.

BBC: Network Rail signalman praised for averting Sandy crash

The sooner other countries follow their example and base transport taxation on total costs, the sooner rail freight will be able to compete.

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