Proper protection of railroad-highway grade crossings; standardization of crossing protection; adjuncts to signals; fixed signs and approach warnings; separation and protection; watchman and manual gates; number of accidents decreasing. Before Western Soc Engrs.
Crossing protection developments
Ry Signaling
Railway Signaling ; 33 , n 5
1940
2 pages
Article (Journal)
English
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Engineering Index Backfile | 1930
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