Learn the warning principle of high visibility vests. High-visibility vests are divided into 3 classes for different working environments. Class 1 for warehouses, Class3 for high-risk road workers.
Warning Principle of High-Visibility Vests
High-visibility vests adopt different visual materials according to their safety application scenarios.
Classified by the minimum required area of visual materials, high-visibility vests are divided into 3 classes. Class 1 delivers the lowest protection level while Class 3 offers the highest safety performance.
In practical applications, users shall select suitable high-visibility vests based on working environments:
- Class 1 vests have low visibility requirements, ideal for staff working in parking lots, warehouses and storage yards.
- Class 3 vests are designed for workers in high-risk environments, including emergency medical personnel, traffic police and road maintenance workers.
Three types of visual materials are commonly used on high-visibility vests: fluorescent materials, retroreflective materials and composite materials.

