Track fault delays trains by up to 30 minutes at Carseldine station

A track fault at Carseldine train station triggered delays for trains on the Caboolture, Redcliffe Peninsula and Sunshine Coast lines of up to 30 minutes on Tuesday morning.

Queensland Rail warned commuters the problem was causing "knock-on" delays to outbound Ipswich and Springfield services.

Crews were on site repairing the fault, which was resolved at about 7.30am, with ongoing delays of about 15 minutes on those lines, TransLink said.

Queensland Police also issued a warning that the boom gates at Beams Road in Carseldine were not working, with police on scene to direct traffic.

The gates were fixed and traffic flowing normally by 7.30am.