A permanent speed restriction sign on the Down Main line at Carnforth, on the West Coast Main Line. The upper board indicates a permissible speed of 110 m.p.h. for conventional trains, while the lower board shows an 'enhanced permissible speed' of 125 m.p.h., applicable only to tilting trains in tilting mode. (Photo taken 22 February 2006, by Jeremy Reece.)

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