All-electric interlocking was introduced ( it cancelled work of pointsmen ) and radio communication with railroad engineers.
2.
The middle platform was built in 1949 . In 1953, a new electric signal box with electric interlocking and railway signaling were built.
3.
In 1942, the switching towers at West Henryville and Analomink were replaced by electric interlockings, remotely controlled from the Gravel Place tower.
4.
In the shortest possible time an extension was built to the post of electric interlocking and high loading platform, in addition to the construction of the railway stations Promishlenaya-1 ( ) and Promishlenaya-2.
5.
Prompted by the accident, engineer Edward Tyer developed the tablet system in which a token is given to the train driver; this must be slotted into an electric interlocking device at the other end of the single-track section before another train is allowed to pass.
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