Measuring Techniques for Retroreflectivity Levels of Small Signs

Abstract

Collisions between vehicles and pedestrians are a significant problem, and substantial evidence indicates that the problem is closely linked with low illumination. A less expensive approach to enhancing the conspicuity of pedestrians involves using retroreflective material – material that has been engineered to passively reflect light back in the direction of its source. In a Textile faculty of TU Liberec was developed microscopic method to research the affecting factors textile thin bands retroreflectivity [1]. This work has been done through the use of several quality tools allowing studying different phenomena such as effect of color and technology on retroreflectivity levels.

Design of Alternative Warning Sign and Pedestrian Conspicuity

“…The design of high visibility clothing is based on two almost independent phenomena to increase its conspicuity. Fluorescent colorants that increase day visibility and retroreflective strips, which increase night visibility (Vik 2016). As for retroreflective materials, they appear brightest to an observer located near the original light source.…”