| 1. | Not all blocks are controlled using fixed signals.
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| 2. | While trains only operated as far north as Upper Hutt, they were not protected by fixed signals.
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| 3. | The SH-7 are similar in styling, but both have fixed signal paths, as opposed to the semi-modular System 100.
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| 4. | Some stop signals are in the form of a fixed signal, generally a white board with a red solid circle.
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| 5. | The semaphore was afterwards rapidly adopted as a fixed signal throughout Britain, superseding all other types in most uses by 1870.
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| 6. | At junctions, where Supertram and train movements can conflict with road traffic, fixed signals are provided in addition to points indicators.
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| 7. | The signal box at Drouin was closed in February 1988, with the block post abolished, all fixed signals covered and lights extinguished.
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| 8. | The stop boards are fixed signals and a train may not be driven past without authority from the guard operating the ground frame.
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| 9. | However he did not inform the driver and there was no fixed signal to hold him, instead a system of hand-signals was in use.
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| 10. | It is believed that at Corbetts Lane there was installed the first fixed signal used to control a junction, a white disc operated by the pointsman.
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