Disruptions are organised by defining causes and effects, these help provide more contextual information about the type of disruption.
Unexpected traffic or an increase in traffic where a timetable has not yet been updated.
A gathering of protesters (rather than a system demo)
Level crossing failure
Traffic light failure
A service is not running for a period. Passengers should use a different 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.
1 or more journeys are delayed a significant amount. Insignificant delays should be reported by a real time (SIRI-SM) system.
Stop not in use