Metropolitan Line 

A selection of diagrams showing the signalling arrangements for sections of the Metropolitan Line at different times throughout its history.

	A diagram showing details of the signalling between Harrow on the Hill and Amersham and Chesham just after completion of the four tracking scheme between Harrow and Watford South Junction and the extension of electrification from Rickmansworth to Amersham.
	A set of diagrams showing each major stage in the 1961/62 scheme to provide four tracks between Harrow North Junction and Watford South Junction on the Metropolitan Line. Make sure you zoom in to see all the detail.
	A set of diagrams showing the various changes at Rickmansworth since the current Signal Cabin opened in 1953.
	A diagram showing details of the signalling along the Uxbridge Branch of the Metropolitan Line in 1948.
	A set of diagrams showing the signalling arrangements between Kings Cross and Moorgate in 1926 and between Farringdon and Aldgate in 1956.
	A set of diagrams showing the details of signalling on the Bakerloo Line in 1939 between Stanmore and Elephant & Castle. They also show the signalling on the Metropolitan Line between Wembley Park and Finchley Road.
	Two diagrams showing the current and possible future arrangements at Baker Street (Met).

Most of the diagrams are in PDF format and to open them you will need Adobe Acrobat Reader. If you do not already have this it can be downloaded from the Adobe Website.