Disruptions are organised by defining causes and effects, these help provide more contextual information about the type of disruption.
Causes
Accident |
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Bus issue |
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Congestion | Unexpected traffic or an increase in traffic where a timetable has not yet been updated. |
Construction |
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Demonstration | A gathering of protesters (rather than a system demo) |
Event |
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Holiday |
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Level crossing failure |
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Maintenance |
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Medical emergency |
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Other cause |
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Police activity |
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Roadworks |
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Road blocked |
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Road closure |
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Strike |
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Technical problem |
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Traffic light failure |
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Unknown cause |
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Vandalism |
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Weather |
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Effects
Additional service |
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Diversion |
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Modified service |
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No service | A service is not running for a period. Passengers should use a different service. |
Other effect |
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Reduced service | Some journeys are not running or do not run their full length. Passengers should wait for a later journey or use a different service. |
Significant delays | 1 or more journeys are delayed a significant amount. Insignificant delays should be reported by a real time (SIRI-SM) system. |
Stop moved |
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Stop not in use |
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Unknown effect |
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