No "call for signals" at train order stations after 1931

NW Mailing List nw-mailing-list at
Sun Jul 19 07:24:34 EDT 2020

 Gordon Hamilton provided this information:

N&W 1926 Annual Report

AUTOMATIC TRAIN CONTROL. Automatic Train Control (ATC) between Roanoke and Shenandoah, Va., a distance of 132 miles, including automatic signals, wayside train control apparatus, transmission line and engines operating with train control device, was completed and placed in operation January 1st, 1927. Automatic train control has now been installed on the entire Shenandoah Division of your Company's line, extending from Roanoke, Va., to Hagerstown, Md., a distance of 239 miles.


Is there a date in the 1925 Annual Report or earlier stating when ATC was implemented between Hagerstown and Roanoke? Also, I suppose that ATC was an enhancement to automatic block signals that had already been installed. In the valuation photographs of station buildings circa 1921, block signals appear in some views. However, the manual block signals are still on earlier views taken between 1913 and 1917, suggesting that automatic block signals had yet to be installed.  An example is the attached Berryville depot which has the manual block signals below the train order semaphores.

Good morning,

Frank Scheer
f_scheer at
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