Railroad Signaling
[1865]
$24.99

Now for the first time the otherwise arcane world of railroad signaling is explained in concise language and brought to life with nearly 200 fantastic photographs that help depict not only signaling history but also: Manual Block, Towers and Interlocking, Automatic Block, Centralized Traffic Control, Train control & Cab Signaling,and Grade Crossing. Softcover                                                              

 

 
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