RAIL passengers on the Weymouth-Waterloo line are again facing delays today.
Emergency engineering work at Parkstone means that buses are replacing trains between Poole and Bournemouth.
Trains are operating between Weymouth and Poole and between Bournemouth and London.
The work has been ordered by Network Rail to repair a 'track defect.'
Repairs are due to be finished soon but this has been extended to midday, says operator South West Trains. The line is now due to open about 1pm.
Signalling problems and a fallen tree on the line caused problems earlier this week.
Scheduled engineering works on Sunday will mean buses will replace trains between Weymouth and Wareham