| 1. | A series resistor limits the current when the track circuit is short-circuited.
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| 2. | Short track circuits typically pay drivers at the conclusion of each event.
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| 3. | The tunnel is track circuited with Ebi Track 400 system track circuits.
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| 4. | She joined the European track circuit where her marks continued to improve.
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| 5. | However, she was known on the track circuit as unusually withdrawn and sullen.
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| 6. | TI21 main line track circuits can be up to 1100 m in length.
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| 7. | This assumes that there are no ordinary track circuits for block signalling purposes.
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| 8. | With two signal protection, only one track circuit is needed between successive signals.
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| 9. | In some countries, AC-immune DC track circuits are used on AC electrified lines.
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| 10. | As a result, the track circuit controlling the bridge approach aspect.
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