Views are being sought on proposals to open two new rail passenger lines in the West Midlands.
Under the plans, freight lines from Camp Hill, via Moseley and Kings Heath, and one through Castle Bromwich would become commuter routes into Birmingham.
Transport authority Centro has included the plans in wide-ranging proposals for the region's rail network and wants people's views by 11 September.
It follows calls for England's rail network to be expanded to meet demand.
In June, the Association of Train Operating Companies (Atoc) unveiled plans for 14 extra lines and about 40 new stations to help cope with rising passenger numbers.
In the West Midlands, the plans could mean new stations being built in places such as Moseley, Kings Heath and Hazelwell.
Elsewhere, Castle Bromwich would have a passenger rail station more than 40 years after the previous one closed.
Nigel Pennington, from Centro, said: "We are running out of capacity to run extra trains and we need some significant investment to take place in the network."
He said people's views were being sought on the draft Rail Development Plan, which affects many parts of the region, ahead of a debate on funding.