Finally, the awkward layout of tablet instruments, signals and points levers at Abermule meant that it was possible for conflicting movements to be made. The inquiry recommended that tablet machines be placed in the signal box under the sole control of the signalman, and also that starting signals (which gave trains authority to leave the station) be interlocked with the tablet instruments, so that they could not be cleared until the correct tablet had been released. However, this would involve the rebuilding of the station buildings and signal boxes at Abermule and several other small stations, and it was suggested that alternate single-line sections use the electric tablet system and the older electric staff system; there would be no possibility of mistaking a staff for a tablet. The signalling method continued in use on the line until 1988, when it was replaced by the Radio Electronic Token Block system.