During this time of year, especially in northern Europe, cold traffic signs often accumulate moisture in the form of dew. This condensation can drastically diminish their retroreflective performance—by as much as 87%—resulting in dark, unreadable areas that pose a significant hazard to drivers at night. While this issue is most common in autumn and spring, certain climates experience it throughout the year.

To combat this, Avery Dennison offers the OL-1200 Anti-dew overlay film. This innovative film features a hydrophilic coating. This advanced overlay distributes moisture evenly across the surface, forming a thin, transparent sheet of water that allows light to reflect back uniformly, ensuring clear visibility. With up to 12 years of UV protection, as specified by EN 12899/1 or EAD requirements, the OL-1200 film delivers 10 years of reliable anti-dew performance.

Signal DOO, a specialist in traffic safety products and services from Sombor, Serbia, conducted tests with the OL-1200 Anti-dew and were impressed with the results, which you can see in this test image. The small cube that clearly reflects is with the anti-dew overlay. The pictures were taken early in the morning when there was humidity.