Post by abe on Aug 23, 2013 19:42:41 GMT
The Instruction Book and Rules for Sub-Station Attendants issued by the LER in 1919 notes that illuminated indicators are provided prior to section gaps in the current rails, and that if the section ahead is dead they will show a red light with a white band across. Does anyone know (i) when these were introduced (there's no mention of them in the 1907 Rule Book), and (ii) when they were changed to the current triangular signal with three red lights ('cherries')?
