Despite many passengers'feelings about them,the S-sets have a special place in the hearts of Mr Breen and wife Sandra,65,a train driver for the past 16 years,who have worked together on the trains – him at the back and her at the front.
"The question she always asks me is,'was I all right?'Mr Breen said."She loves working on them because there are no issues with them. The older you get,the less technology you like."
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Air-conditioning units were placed in the driver cabins of the S-Sets more than 15 years ago but not fitted in carriages because of power supply issues and a lack of suitable places to put them.
In recent years,the trains have been kept in service for much longer than the government planned because of the need for extra trains to meet a surge in patronage. Over the past five years,the number of trips taken annually has risen from 300 million to 420 million.