Abandoned plans from the 1920s to extend the line further southwards, and then northwards in the 1930s, would have incorporated parts of the routes of two further companies.
Opgivne planer fra 1920'erne, om forlængelse af banen længere sydpå, og derefter nordpå i 1930'erne, ville have indlemmet dele af ruterne fra to yderligere selskaber.