Yn y tymor byr i ganolig, bydd Network Rail yn cynnal archwiliad fforensig o’r cyfarpar signalau a’r cyflenwad pŵer ym mlwch signalau Caerdydd er mwyn pennu union natur y diffygion. Bwriedir cynnal adolygiad o’r protocolau archwilio a chynnal a chadw cyfarpar hefyd.
In the short to medium term Network Rail will be conducting a forensic examination of the signalling and power supply equipment at Cardiff signal box to determine the exact nature of the faults experienced. A review into inspection and maintenance protocols will also be undertaken.