Greater Anglia insist their new trains are safe after one came within a quarter of a second of hitting a car at a level crossing in Norfolk.
This weekend engineers from Network Rail are working 12 hour shifts to manually operate barriers including near Great Plumstead on the Norwich to Sheringham line.
It comes after a technical fault there meant the barriers lifted too soon. A car just missed being hit by the train while crossing the track.
The incident has prompted a safety investigation from the Railway Accident Investigations Branch. It's thought they will ask if the new Greater Anglia trains, which were only rolled out a month ago, are compatible with the existing level crossings. The incident, which happened on Sunday, November 24, has seen a fortnight of disruption on the Norwich to North Norfolk line. Examinations are being carried out on the other six level crossings on the line.