The fallible human equation of the locomotive engineer which has caused so many fatal train wrecks will be completely eliminated by a system of automatic train control tried out with " extremely encouraging results " on a 50-mile stretch of track of the Pennsylvania Railroad between Lewistown Junction and Sunbury, Pa. It is a combination of electrical, pneumatic and mechanical devices applied to both track and locomotive. The track is electrified with alternating current. The locomotive picks up the current by induction. This power operates three cab signals to the engineer,...
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