In 1975, the signal box was provided with a route setting power interlocking system, which also included the demolition of signalbox A.
42.
A route is locked based on the national principles by the interlocking system and the RBC is informed about the routes set.
43.
The station received a complete interlocking system from 23 April 1939 . The tram line was converted to a metro line in 1966.
44.
GRS manufactured the first all-relay interlocking system in 1929 . It was installed in Lincoln, Nebraska on the Chicago, Burlington and Quincy Railroad.
45.
Soon after the installation of the first full mechanical interlocking system at Lambton Station in Wellington, a smaller system was installed at Kaitoke.
46.
The principle of mixed level signalling is based on simple principles using bi-directional data exchange between the radio block centre and the interlocking systems.
47.
It is now rare in Australia, as very few signal boxes survive with mechanical interlocking systems in place, particularly of such an early date.
48.
This Route Relay Interlocked system at New Delhi is one of the world's largest route relay interlocking system certified by the Guinness Book of Records.
49.
Behe coined the term " irreducible complexity, " the idea that some natural structures, like mousetraps, consist of many parts functioning as an interlocking system.
50.
Once the initial site installation difficulties were isolated and resolved, the new interlocking system settled down and has been conveying indications and controls without difficulties.
