Nakon izgradnje pruge Bosanski Brod – Sarajevo, u planu je bila izgradnja pruge Sarajevo – Banja Luka, preko Travnika i Jajca, te dalje prema Aržanu i Splitu (Sinjska rera), kao i Unska pruga.
After the construction of railway line Bosanski Brod - Sarajevo, the plan was to build a railway line Sarajevo - Banja Luka, via Travnik and Jajce, and further to Aržano and Split (Sinj Rera), and Una railway.