Where should reflective warning stickers be placed?

[OBrianna]

Automotive reflective warning stickers are generally placed on the rear of the vehicle. Principle: The reflective film on vehicles utilizes optical principles, featuring a specially structured PVC film that can retroreflect light back to its source. Composition of reflective warning stickers: They consist of a weather-resistant film layer, a micro glass bead layer, a focusing layer, a reflective layer, an adhesive layer, and a release layer. The reflection is primarily due to the micro glass bead layer, which maintains relatively consistent reflectivity across a wide range of angles. However, the light reflected by the micro glass beads tends to scatter, and this scattered light is then focused by the focusing layer before being reflected back to the source. The focusing layer is composed of countless tiny convex lenses.