Description

pages 565-628. Features: Reverse Running on the Pennsylvania - on 226 miles of track between New York and Washington certain sections of track. are signaled for train movements in both directions; S.P.&S. installs all-relay interlocking; Regulated Track Circuit - automatically regulates a D.C. track circuit; Interlocking on the Grand Trunk - all-relay plant eliminates train stops at a crossing with the New York Central; Rio Grande Installs Radio to Improve Through Freight Service - improving a 576 mile section between Denver and Salt Lake City; New Signal Control Line Circuits in Centralized Traffic Control Territory on the Burlington; and more. Many great illustrated contemporary ads. Above-average wear to covers which are detached but present. Fold-mark down middle. Unmarked. A worthy reference copy. Book