Overview
- Britain’s rail accident investigator published its findings on December 17, concluding the Southern driver failed to brake in time after a brief loss of alertness caused by fatigue.
- Data logs show the train entered platform 12 at 13.3 mph, an emergency brake was applied about 3.5 metres from the buffers at 6.8 mph, and it struck at roughly 2.3 mph with no injuries and minor damage.
- Probable contributors included a roster design that increased fatigue risk and the driver working nine of 12 scheduled rest days in the prior 22 days, with possible reduced sleep the night before due to childcare changes.
- Protection systems did not intervene because the Train Protection and Warning System’s threshold was not met and current mainline trains lack technology to detect very short lapses in alertness.
- RAIB issued two recommendations—GTR to strengthen fatigue management and RSSB to develop guidance on medical fitness that considers working hours—and GTR says it updated its fatigue standard in August and is using scientific shift modelling with stronger staff engagement.