Evening Republican, Volume 14, Number 238, Rensselaer, Jasper County, 6 October 1910 — Development of Signals. [ARTICLE]

Development of Signals.

The development in railroad signaling in the last few years has been tremendous, chiefly along electrical lines, and the plant Installed for the use of the Pennsylvania tunnel and terminal is the largest single installation of its kind ever made in this country. Millions of feet of wire and conduit have been made use of In this instance. Complete signaling and interlocking of a double four-track road require a large amount of electrical apparatus, and the introduction of electrical propulsion complicates the situation.