Because the reflective vest is made of reflective (fluorescent) materials. Reflective vests are clothing that can serve as a warning and safety under various light conditions. It is generally composed of a strikingly colored substrate (fluorescent) material and reflective (retro-reflective reflective material).
Reflective materials use glass or prism-type materials to make the incident light directional return along the original path. Reflective clothing made of glass beads, reflective vest markings, and fluorescent background colors are hundreds of times more eye-catching under the light than reflective vest reflective work clothes without reflective materials.
The effect of fluorescence and reflective reflection is stronger so that the wearer will form a strong contrast with the surrounding environment under the illumination of light no matter in day or night. It is found within a visual distance of 800m, which plays a role in safety protection.
Reflective materials are widely used in construction, occupational safety work clothes for traffic police, traffic coordinators, sanitation workers, logistics personnel, volunteers, highway and railway personnel, and road construction personnel, which play an excellent protective role.
Due to the popularity and consumption of reflective materials, the number of deaths from night car accidents in the United States has fallen by 40% in the past ten years. In various regulations or publicity of European and American countries, the use of reflective materials is emphasized. For example, under the environment of rain, fog, snow, night, etc., the elderly and children must wear or wear signs or clothing with reflective materials when they go out.
