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Cross purposes


In his article Points of Reference (NCE 14 July), Adrian Greeman seems to have got his permanent way components rather mixed up.

What he calls a 'crossover' is in fact a 'crossing'. A crossover is a means of enabling a train to cross from one line to an adjacent line and includes two pairs of switches and two crossings.

Philip Rees, 27 Glenaven Close, Claygate, Esher, KT10 0HP

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