Merge Left (TC1843-1) – Multi-Message Sign

The Merge Left (TC1843-1) multi-message sign is a 600 × 600 millimetre traffic yellow regulatory panel designed to instruct motorists to merge safely into the left lane where roadworks or lane reductions are in effect. This sign provides a clear, enforceable directive to manage merging traffic efficiently, reduce conflicts, and enhance safety at worksites and road narrowing points. Manufactured to Queensland Government traffic control requirements, the panel integrates seamlessly with the state-approved multi-message frame system.

As part of Queensland’s modular multi-message system, the Merge Left panel can be displayed on its own or paired with complementary warnings such as “Changed Traffic Conditions,” “Reduce Speed,” or “Roadwork Ahead” to form one compliant display. The approved frame allows flexible layouts, including two 600 × 600 millimetre panels above a 1200 × 300 millimetre panel, or a single 1200 × 600 millimetre panel above with the same 1200 × 300 millimetre panel beneath. This modularity allows councils, contractors, and traffic management providers to adapt signage quickly as conditions change.

Produced with CL400 Class 1W reflective material in traffic yellow, the Merge Left panel provides excellent visibility in daylight, at night, and during adverse weather. Its durable, weather-resistant construction complies fully with Australian traffic sign standards, ensuring long-term reliability in demanding road and construction environments. By clearly directing motorists to merge left, the sign reduces last-minute lane changes, improves driver awareness, and supports smoother traffic flow.

For lane closures, roadwork zones, and temporary traffic control, the Merge Left (TC1843-1) sign delivers trusted compliance, high-visibility performance, and durable construction in one modular panel.