Line Marking (MMS-ADV-15) – Multi-Message SignThe Line Marking (MMS ADV 15) multi message sign is a 600 600 millimetre traffic yellow panel designed to alert motorists that line marking works are being carried out ahead. This sign provides clear advance warning so drivers can reduce speed, remain alert, and avoid crossing over freshly painted lines. Manufactured in compliance with Western Australia Government traffic control requirements, the panel integrates seamlessly with the states approved