Highland steam heat swansong

摘要

In 1984, the BR locomotive fleet was being modernised as the last remaining vacuum-braked Class 20s, 26s, 31s and 37s were upgraded with dual brakes and steam heat was phased out in favour of electric train heating for Class 31s and 47s, and a handful of 37s.rnBR was also cutting costs by replacing loco-hauled trains with DMUs, while in Scotland a new signalling system, Radio Electronic Token Block (RETB), was introduced on the Dingwall-Kyle of Lochalsh line in July 1984, doing away with conventional signalling.