The Health and Safety Executive estimate that trains will overturn at above 75 mph (120 km/h), and noted that "Morpeth 1994 was a very serious event, which could easily have been fatal".
英国健康安全局（英語版）は列車は75 mph (120 km/h)以上で走行すると転覆すると推定し、また「1994年のモーペスでの事故はとても深刻な出来事であり、死者が出たかもしれなかった ("Morpeth 1994 was a very serious event, which could easily have been fatal")」と特筆した。