The Left Lane Closed (MMS-POST-1L) multi-message sign is a 600 × 600 millimetre traffic yellow panel designed to notify motorists of a left-lane closure ahead. Commonly used in roadworks, maintenance projects, or emergency traffic management, this sign provides clear direction for drivers to merge right, adjust speed, and follow altered traffic conditions safely.
Manufactured in compliance with Western Australia Government traffic control requirements, the panel integrates seamlessly with the state’s approved modular multi-message frame system. It can be displayed independently or paired with complementary warnings such as “Prepare to Stop” or “Merge Right” 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 system 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 Left Lane Closed panel ensures excellent visibility in daylight, at night, and in adverse weather conditions. Its durable, weather-resistant build complies with Australian traffic sign standards, ensuring reliable long-term use in challenging outdoor environments.
By clearly marking left-lane closures, the Left Lane Closed (MMS-POST-1L) sign enhances driver awareness, reduces risks, and supports safer traffic flow through restricted road zones.
