Automatic Power Control (APC) Track magnets are painted yellow and located each
side of a neutral Section. Any APC Track magnet found to be loose, damaged or
defective must be reported immediately to the ECO, who must promptly arrange for
repair or replacement.
The ECO must also arrange with the Train Controller for the Rail Traffic Crew of any
EMU which is to pass over the defective magnet, to be warned that the APC Track
magnet is defective. The Rail Traffic Crew must trip the main Circuit Breaker on the
Rail Traffic prior to entering the neutral Section and close it after passing through the
neutral Section.