Cumbria's Coastal Line could soon be run by a new management team based in the county.
The franchise is currently run by Northern Rail but the county council is exploring the possibility of taking it over.
The line is used by thousands of workers each week and also carries freight to and from Sellafield.
Passenger groups are warning independence could isolate the line.
Direct Rail Services use the Barrow to Carlisle route to ship frieght to and from Sellafield. They're in discussions with the council to be involved.
Today Cumbria County Council said it would be an opportunity to secure future investment in the line which could come at the same time as potential develoment at the Sellafield site. A spokesman added:
However passenger groups are wary of any move that isolates the line.
If the council and partners take on the running it could secure investment for the line but at the same time - as some passenger groups warn - isolate it from the main network.