| 31. | After their son was born, Montgomery dropped off the European track circuit to help at home.
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| 32. | Track circuits are a means of detecting trains along a track section using an electric current.
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| 33. | I have a lot of acquaintances on the track circuit but not a lot of friends.
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| 34. | Montgomery left the track circuit to be home for the first few weeks after the birth.
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| 35. | The track circuit circumference was 400 yards consisting of distances of 300, 525 and 715 yards.
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| 36. | DC immune AC coded track circuits were used on the long track sections in the tunnels.
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| 37. | Up until that point, Track Circuits always had a big edge when it came to reliability.
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| 38. | Occasionally, sleepers are made with conduits for track circuit wiring, or extra fixtures for guard rails.
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| 39. | Football might have been his dream, but competing on the international track circuit meant financial security.
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| 40. | Axle counters are also useful on long sections where several intermediate track circuits may be saved.
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