Information Transmission
Cab signals require a means of transmitting information from wayside to train. There are a few main methods to accomplish this information transfer:
- Mechanical
- Magnetic field
- Electric current
- Inductive (changing magnetic field)
- Coded track circuits.
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Famous quotes containing the word information:
“Rejecting all organs of information ... but my senses, I rid myself of the Pyrrhonisms with which an indulgence in speculations hyperphysical and antiphysical so uselessly occupy and disquiet the mind.”
—Thomas Jefferson (1743–1826)