The Rail Accident Investigation Branch (RAIB) is an independent agency in the United Kingdom responsible for investigating accidents and incidents on the railways. Established in 2005, its primary goal is to improve safety by identifying the causes of accidents and making recommendations to prevent future occurrences. RAIB conducts thorough investigations, analyzing evidence and gathering testimonies from various stakeholders, including railway operators and safety organizations. The findings are published in reports that aim to enhance the overall safety of the UK railway system and inform the public and industry about lessons learned from each incident.