First Open

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A First Open or FO, is a type of railway carriage used by British Rail. They were first produced as British Railways Mark 1, and subsequently Mark 2, Mark 3, and Mark 4 variants were produced.

[edit] Mark 4

Built in 1988 by Metro Cammell at their Washwood Heath plant in Birmingham, the coaches are 23 m long with power operated sliding plug doors, are fitted with SIG bogies and are capable of running at up to 140 mph (225 km/h) but usually run at a maximum of 125 mph (200 km/h).

v • d • e Coaching Stock of British Rail Passenger Coaches Mark 1: BCK · BFK · BSK · BSO · BSOT · CK · FK · FO · RB · RBR · RF · RKB · RMB · RU · SK · SLC · SLF · SLSTP · SO · TSO Mark 2: BFK · BSK · BSO · BSOT · BUO · DBSO · FK · FO · FOT · PFB · PFK · PFP · RFB · RLO · RMBF · RSS · SK · SO · TSO · TSOT Mark 3: BFO · CO · FO · RFM · SLE · SLED · SLEP · TSO · TSOB – (Locomotive-hauled) TF · TGS · TRB · TRFB · TRFK · TRSB · TS – (HST trailers) Mark 4: FO · RBF · RSB · TSO · TSOD · TSOE Non Passenger Carrying Coaching Stock (NPCCS) Mark 1: BG · BPOT · BV · Courier · GUV · PCV · POS · POT Mark 3 and 4: DVT British Rail coach designations · British carriage and wagon numbering and classification