In 1914, along with the rebuilding of the station, it was proposed to install a flying junction at Aller to speed up the passage of trains coming off the branch. The plans were shelved due to World War I, but on 24 May 1925 a junction was once again installed where the two lines diverged, now known as Aller Junction. The four tracks were now grouped by direction of travel – down relief, down main, up relief, up main. Trains for either line could use either track between the junction and the station but trains to and from the branch generally used the "relief" lines. This meant that trains coming off the branch had to cross over the line used by trains going towards Plymouth which could cause delays at busy times. The junction was moved during the 1987 resignalling to a new position about closer to the station. Trains can now run to and from the branch on a single line connection with their own platform, or cross over to the Plymouth–Exeter tracks on either side of the station as may be convenient.