Transport for London (TfL) is using modified electric trains as a temporary measure on the Gospel Oak to Barking line on the London Overground.
The measure has been taken because the Class 710 trains that will be used on the line are not yet ready because software development and mileage testing are being undertaken before the vehicles can be released for driver training.
Passengers and business users on the line are using a mixed fleet of trains that began operating towards the end of January, until the new electric trains are delivered.
To satisfy demand on the line, three existing Class 378 trains have been modified so that they can be used temporarily until the new electric trains are ready.
One of these has already joined the line, while the other two will do so before March.
It does however, mean that diesel trains are still being used on the line when they were expected to have been removed from the line almost a year ago to make way for the electric, environmentally friendly counterparts.
Despite this, the modified electric trains used on the line are more than double the capacity of the diesel trains currently in operation – all part of the wider strategy to improve air quality.
That means customers, businesses and other users will already be feeling the benefits of electric trains, and be able to see just what they deliver.
Jon Fox, Director of Rail and Sponsored Services at TfL, commented: “We had expected the new trains to be in service well before now and are doing all we can to minimise impact on our customers who have been waiting for way too long for the trains they have been promised.
“Given the ongoing delays we are modifying three electric trains normally used elsewhere on the network and will put them into use on the Gospel Oak to Barking line until the new electric trains are here.”