Prepare To Stop (MMS-ADV-27) – Multi-Message SignThe Prepare To Stop (MMS ADV 27) multi message sign is a 600 600 millimetre red panel designed to warn motorists that they must be ready to come to a complete stop ahead. Commonly used in roadwork zones and temporary traffic management sites, this sign provides drivers with early notice of stop slow conditions, temporary signals, or traffic controllers operating on the roadway. Manufactured in compliance with Western Australia Government traffic