Chicago South Shore and South Bend Railroad protects Michigan City, Ind., crossing with city "stop and go" light; operation of signal; layout of electrical circuit.
Traffic light protects crossing
Traction Shop Roadway
Traction Shop and Roadway ; 2 , n 10 ; p 313-314
1929
2 pages
2 Figs.
Aufsatz (Zeitschrift)
Englisch
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