MP Nick Herbert’s demands for better rail services along the Arun Valley line have been backed by the government.
Mr Herbert, the MP for Arundel and South Downs, met rail minister Claire Perry to discuss services in the area.
Ms Perry said she would meet Network Rail and the rail operating companies and invite the area’s MPs.
“I have told them that they must improve reliability,” she said.
Mr Herbert was recently appointed president of the West Sussex Rail Users’ Association, and said he had received complaints about the standards on the line and the Brighton mainline.
The lack of parking at Barnham station was among the main issues raised, along with punctuality and the standard of cleanliness.
Speaking after the meeting last Tuesday, Mr Herbert said: “I was grateful for the opportunity to relay my constituents’ concerns about local rail services and was pleased that the minister has identified that improvements are necessary.
“People pay a great deal, through their taxes and fares, for rail services, especially commuters, and they are entitled to a reliable service.”