Queensland's newest train line is out of action, with commuters urged to find another way in to work.
About 6.45am, transport agency Translink said no trains were running on the Redcliffe Peninsula line due to a signal fault.
Replacement buses had been arranged in both directions between Kippa-Ring and Petrie but a spokesman warned hour-long delays were expected.
He urged passengers to delay their travel or find another transport option.