An investigation found the Elizabeth Line train was travelling at almost double the speed limit.
A senior official apologised after an Elizabeth Line train travelled almost twice the speed limit, causing at least one person on board to fall over.
The to Shenfield service “jolted sideways” as it passed over a set of points near Manor Park, east , at 45mph instead of the 25mph limit.
No injuries were reported in the incident but CCTV footage from inside the train shows that the “sudden movement” resulted in some passengers losing their footing and at least one to fall to the floor, according to the Rail Accident Investigation Branch (RAIB).
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The investigation into the incident in September last year found the driver became “confused” about the train’s location after it was diverted from its intended route due to a track circuit failure.
The RAIB said the train did pass a 25mph speed limit sign but it was “incorrectly placed, inconspicuous and dirty” which made it difficult to see.
Director of the Elizabeth Line, Howard Smith, said: “We apologise to customers who were on board the train during this rare incident.”
700,000 people travel on the Elizabeth Line every weekday
He confirmed that changes had been made to procedures in line with the investigation’s findings.
The Elizabeth Line was opened in 2022 and runs from Essex to Berkshire, travelling underground through central London.
The line costs around £18bn and records around 700,000 passenger journeys every single day.
In December, , including in tunnels.