The Portaboom (MMS-ADV-79) multi-message sign is a 600 × 600 millimetre traffic yellow panel designed to warn motorists of a Portaboom traffic control device in operation ahead. Commonly used in roadworks, construction projects, and temporary traffic management sites, this sign alerts drivers to prepare for controlled stops and follow the instructions of traffic controllers managing vehicle movements.
Manufactured in compliance with Western Australia Government traffic control requirements, the panel integrates seamlessly into the state’s approved modular multi-message frame system. It can be displayed independently or paired with related warnings such as “Prepare to Stop” or “Traffic Controller” to create a compliant, adaptable display. The approved frame supports flexible layouts—two 600 × 600 millimetre panels above a 1200 × 300 millimetre panel, or one 1200 × 600 millimetre panel above with the same 1200 × 300 millimetre panel beneath. This modular format allows councils, contractors, and traffic managers to update signage quickly and cost-effectively as site conditions change.
Constructed with CL400 Class 1W reflective material in traffic yellow, the Portaboom panel ensures excellent visibility during the day, at night, and in adverse weather conditions. Its durable, weather-resistant build complies with Australian traffic sign standards, providing reliable long-term performance in demanding outdoor environments.
By warning of Portaboom operations, the Portaboom (MMS-ADV-79) sign enhances driver awareness, reduces risks, and supports safer traffic management around controlled work zones.
