Halifax MP Linda Riordan is urging investment in Calderdale trains to bring the local rail network into the 21st century.
Commuters have complained that at peak periods trains are arriving with too few carriages which means many passengers are crammed on to trains and forced to stand for much of their journey.
Mrs Riordan and local Labour Party colleagues campaigned at Halifax train station picking up signatures from the general public supporting her stance.
She said: “The Caldervale line urgently needs some investment in new trains that are fit for the 21st century.
“The current rolling stock is old, uncomfortable and lacks capacity. Passengers deserve better.”
After picking up signatures and receiving people’s opinions on the best way forward Mrs Riordan said she will take her fight to the train operators.
“I am pressing the Department for Transport and Northern Rail to take action,” she said.
“Many commuters have to stand for their journey to work, which is totally unacceptable.
“If we want a railway network fit for the 21st century we need trains that are modern, comfortable with plenty of seating.”
Mrs Riordan said that a modern, rail service able to meet demand was essential for the continued economic growth in Calderdale and throughout West Yorkshire.
“Halifax has good connections to major cities and it’s about time the quality of the trains matched the frequency of the services,” she said.