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.
Read more about this topic: Cab Signalling
Famous quotes containing the word information:
“I believe it has been said that one copy of The Times contains more useful information than the whole of the historical works of Thucydides.”
—Richard Cobden (1804–1865)