Network Rail has issued a statement following the publication of a report detailing the cause of a train collision near Salisbury in October 2021. The Rail Accident Investigation Branch (RAIB) concluded that low rail adhesion, primarily due to autumn leaf fall, played a significant role in the incident where two passenger trains collided.
The crash, which took place on the evening of Halloween, involved a Great Western Railway (GWR) service and a South Western Railway (SWR) service. The GWR train, travelling from Portsmouth Harbour to Bristol Temple Meads, derailed after its wheels slipped on the wet and leaf-covered tracks. Shortly after, an SWR train, en route from London Waterloo to Honiton, collided with the derailed GWR service.
While there were no fatalities, 13 individuals sustained injuries, with four requiring hospital treatment. The RAIB's investigation focused on the environmental conditions and operational procedures in place at the time. Low adhesion is a recurring challenge for railway operators, particularly during autumn when decaying leaves on the tracks create a slippery, Teflon-like coating when wet.
In response to the findings, Network Rail confirmed it has already implemented a series of new measures aimed at preventing similar incidents. These include a significant increase in leaf-fall mitigation efforts, such as enhanced track-cleaning operations and vegetation management. Furthermore, the organisation has introduced improved technology for monitoring rail adhesion levels, allowing for more proactive responses to hazardous conditions.
A spokesperson for Network Rail acknowledged the severity of the incident and reiterated the company's commitment to safety. They emphasised that lessons learned from the Salisbury crash have been integrated into their operational practices, reinforcing the importance of continuous improvement in rail safety across the network.
The incident underscored the complex interplay of environmental factors and operational protocols in maintaining the safety and reliability of the UK's rail infrastructure. The RAIB's report provides crucial insights that will inform future safety strategies for railway operators and infrastructure managers.