Wet Bitumen (MMS-RC-12) – Multi-Message SignThe Wet Bitumen (MMS RC 12) multi message sign is a 600 600 millimetre traffic yellow panel designed to warn motorists of freshly sealed or treated road surfaces that may be slippery when wet. Commonly used after resealing, resurfacing, or road maintenance works, this sign provides advance notice for drivers to reduce speed, maintain control, and avoid sudden manoeuvres on unstable surfaces. Manufactured in compliance with Western Australia Government