| 1. | Many rail systems use a fixed block system for Automatic Train Protection.
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| 2. | The sections were then worked by the Electric Token Tablet Block system.
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| 3. | It was the first substantial British railway to operate the block system.
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| 4. | For many years he built block systems and created beautiful complex structures.
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| 5. | The schedule rotates in the block system as Blue and Red days.
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| 6. | A computerized block system is used to prevent trains from contacting each other.
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| 7. | Proponents of the " block system " included George Witherage Cotton.
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| 8. | SelTrac automatically maintains headway between vehicles through a moving block system.
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| 9. | It adopted a proprietary signalling system based on Sykes lock and block system.
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| 10. | Even with an absolute block system, multiple trains may enter a block with authorization.
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