How Fabric Soiling Affects AS/NZS 4602.1 Luminance Compliance The morning shift at a Brisbane road‑work site started without a hitch—until a traffic controller slipped on a wet patch and bruised his elbow. An investigation showed the hi‑vis vest he was wearing had faded oil‑stained panels that no longer reflected the required 150 cd/m² under dark‑sky conditions. The […]