Recommendation: 2022003-05

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Ref # 2022003-05
Status Open / In progress
Occurrence Trend investigation into Signals Passed At Stop on the Luas network
Occurrence Date 03 January 2020

Basis for Recommendation

There is a definitive link between Signal Passed at Stop (SPAS) events on the Luas and the timings of scheduled meal breaks; in particular, SPAS events are occurring where drivers are due to take their meal breaks; these may be related to driver fatigue. In terms of human factors, there are also issues related to incorrect expectation (including reading the PPI and Signal together), distractions and pre-occupation, and, operating in degraded mode. As a result the RAIU make the following safety recommendation:


Transdev Dublin Light Rail (TDLR) should, with the assistance of a qualified human factors expert, introduce training in relation to error prevention techniques as a tool for drivers to manage distraction, pre-occupation and incorrect expectation.