glossary:glossary_b
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glossary:glossary_b [2020/09/14 14:40] – [Bell signals] grovenor | glossary:glossary_b [2020/09/14 14:43] – [Block Control] grovenor | ||
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- | Block control is the philosophy that a railway should be divided into blocks and that no train should normally be allowed to enter a block which is already occupied. This means that each block has a stop signal at which a train is required to wait if the block ahead is occupied. This will be set back 0.25 mile from the start of the next block. Further back there will be a distant signal which informs the driver that he needs to slow because the signal ahead is at stop.\\ | + | Block control is the philosophy that a railway should be divided into blocks and that no train should normally be allowed to enter a block which is already occupied. This means that each block has a stop signal at which a train is required to wait if the block ahead is occupied. Further back there will be a distant signal which informs the driver that he needs to slow because the signal ahead is at stop.\\ |
Modern electric signalling systems allow for more variation in slow signals with the a double yellow as a preliminary caution as well as the yellow caution to give two stages of slowing.\\ | Modern electric signalling systems allow for more variation in slow signals with the a double yellow as a preliminary caution as well as the yellow caution to give two stages of slowing.\\ | ||
[[http:// | [[http:// |
glossary/glossary_b.txt · Last modified: 2022/10/10 21:55 by Bob Vetterlein