Metro passengers faced another tough ride into work this morning as yet more problems hit the system.
Bosses are warning passengers that trains are not running to their usual timetable due to "low rail adhesion," usually attributed to on leaves on the line.
It comes after a number of high-profile hold ups on the Metro, including a chaotic night for commuters last Wednesday when a failed train caused hours of delays.
Metro said its "rail head treatment train" is out on system again today to help combat problems caused by low rail adhesion.
It works by laying a special get which helps trains keep traction on the line.
A Metro spokesman said: “There have been some delays today due to low rail adhesion but trains are running to all destinations.
"The affected areas are North Tynside and the line to South Shields. Services on the Sunderland line are currently unaffected.”