| 41. | Essentially the theory goes that the speed of light is a cosmic speed restriction that nothing can pass.
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| 42. | Some railway lines were damaged or threatened by unexploded bombs which forced speed restrictions down to five mph.
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| 43. | As a result, more care had to be taken by crewmen in approaching junctions and speed restrictions.
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| 44. | These errors meant that the placing of the AWS magnet for the temporary speed restriction was also incorrect.
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| 45. | Trains using the tunnel were subject to speed restrictions around the area damaged in the Nov . 18 fire.
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| 46. | Since Tuesday's accident, Railtrack has imposed speed restrictions at 81 sections of track around the country.
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| 47. | This line is subject to many speed restrictions due to the need to replace several old sections of track.
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| 48. | Train movements in the station area are subject to a speed restriction in order to reduce noise and smoke.
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| 49. | Blanket heat-related speed restrictions were intended to be eliminated, limiting delays even on hotter summer days.
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| 50. | The TBL 1 + definition allowed for an additional speed restriction to be transmitted to the train computer already.
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