The third chord runs between "Rose Street Junction" on the Far North Line and "Welsh's Bridge Junction" on the Aberdeen/Perth line. The Aberdeen and Perth lines diverge at "Millburn Junction" a short distance beyond Welsh's Bridge. Platforms 1–4 are from (measured via ); Millburn Junction, from Perth, is also from Perth (measured via ). The station is the zero point for the Far North Line, and platforms 5–7 are along this line; Rose Street Junction, along the Far North Line, is from Perth. Signalling for the entire area is controlled from a panel box near the station built in 1988. This supervises the station area & approaches and also houses the Radio Electronic Token Block (RETB) control desk that monitors the full length of the Kyle & Far North lines. RETB was installed by British Rail.