The Signalling Record Society
ELR to RailRef Correlation - ELR Codes V
This page should be regarded as “Work in Progress”. The
The London & South Western Railway resignalled Grateley with an electro-pneumatic system by the British Pneumatic Signal Company in 1901.
Signal Fact 41
Later that year, automatic operation of signals controlled by track circuits was introduced between Grateley and Andover Junction.