Regulations for train signalling on double lines of railway by the Absolute Block system and the Permissive Block system. Includes general instructions to signalmen. British Railways print of London Midland & Scottish Railway volume (2001-9401), 67 pages with some amendments, mint condition. Train signalling regulations Jan. 1947
Regulations for train signalling on double lines of railway by the Absolute Block system and the Permissive Block system. Includes general instructions to signalmen. Produced by London Midland & Scottish Railway. Train signalling regulations Jan. 1947
Regulations for train signalling on double lines of railway by the Absolute Block system and the Permissive Block system. Includes general instructions to signalmen. British Raielways print of London Midland &Scottish Railway volume (2001-9401), 67 pages with some amendments, clean copy. Train signalling regulations Jan. 1947