Network Rail may have difficulty in handling trains of this length on a regular basis.
The Liverpool Echo reports
Amazing video footage showed a huge line of stranded train carriages being recovered by Merseyrail during a day of icy chaos for commuters.
The companys services have been subject to severe delays and cancellations today due to freezing weather conditions.
It said ice had formed on conductor rails, meaning its trains were unable to gain power.
The problem left carriages stranded on routes across the region, along with frustrated passengers who were stuck at stations.
And the situation went from bad to worse, with the offer of rail replacement buses withdrawn and people advised to make alternate travel arrangements.
ECHO reader Andy McLannahan captured a clip of an incredibly long Merseyrail train, recovering stranded carriages on the Chester line.
The Northern and Wirral lines formed the bulk of the journeys affected.
The Liverpool Central to Ormskirk line was blocked and the Liverpool Central to Kirkby line was heavily disrupted.
There were also problems on the Southport and Hunts Cross line and on the Chester and Ellesmere Port line.
Merseyrail said staff were working hard and every measure was in place to try and solve the problems.
The company announced its services were finally back in operation at around 2pm but not without further delays.
A spokesman said: Services have now resumed, however they are subject to delays.
Again our apologies for any inconvenience caused and thank you for your patience.
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