Proceedings of the American Electric Railway Engineering Association ... containing a complete report of the ... Annual Convention, held at .. (1911)
American Electric Railway Engineering Association. Convention, American Electric Railway Association · New York, N.Y. : American Electric Railway Association · leaf 235
Report of Joint Committee on Block Signals 203 «- Clearance Line. - Continuous Obsrrucfn" Clearance Line -Pantograph •■ Note:WifhMinimumDistance of7'frorn center of Track to Face of Pole at … -Min.7'0- r Fig. 5. Standard Clearance Diagram for Semaphore Signal on Electric Roads Where Steam Road Equipment is Operated, But Where Trainmen are Not Allowed to Climb Up Side or Ride on Top of Cars.
American Electric Railway Engineering Association · Electric railroads · Street-railroads
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
