Activity last year in United States and Canada showed increase of about 9.5%, compared with that in 1945; while increases were shown in construction of automatic block, interlocking and especially highway crossing protection, there were decreases in installation of spring switches and centralized traffic control.
Construction of signaling was stepped up in 1946
Ry Age
Railway Age ; 122 , n 1
1947
7 pages
Aufsatz (Zeitschrift)
Englisch
© Metadata Copyright Elsevier B. V. All rights reserved.
Engineering Index Backfile | 1947
|1946 construction covered wide range
Engineering Index Backfile | 1947
|Shinkansen construction to be stepped up in 2005-06
British Library Online Contents | 2005