Signalling block system

A block instrument on the Midland Railway

Accepting a token on the South Devon Railway

Signalling block systems enable the safe and efficient operation of railways to avoid collisions between trains. Block systems are used to control trains between stations and yards and not normally within them. Any block system is defined by its associated physical equipment and by the application of a relevant set of rules. Some systems involve the use of signals while others do not. Some systems are specifically designed for single track railways for which a danger exists of both head-on and rear-end collision, as opposed to double track, whose main danger is rear-end collision.

单词	Permissive block
释义	Permissive block 英语百科 Signalling block system Signalling block systems enable the safe and efficient operation of railways to avoid collisions between trains. Block systems are used to control trains between stations and yards and not normally within them. Any block system is defined by its associated physical equipment and by the application of a relevant set of rules. Some systems involve the use of signals while others do not. Some systems are specifically designed for single track railways for which a danger exists of both head-on and rear-end collision, as opposed to double track, whose main danger is rear-end collision.
随便看	ground glass rangefinder的意思 ground glass screen的意思 ground glass screen image的意思 ground glass screen with magnifier for focusing in cameras的意思 ground glass sounding tube的意思 ground glass stopper的意思 ground glass stoppered bottle的意思 ground glass stoppered flask的意思 ground glaze的意思 groundgl lamp的意思 ground gradient的意思 ground grain的意思 ground grain hulls的意思 ground graphite的意思 ground gravity survey的意思 ground grid的意思 ground grid amplifier的意思 ground grip的意思 ground grip tyre的意思 ground guard的意思 ground guidance computer的意思 ground guidance system的意思 ground guided missile的意思 ground gypsum的意思 Ground handling的意思

Permissive block

Signalling block system