Which class of safety vest offers the highest level of visibility according to the American National Standards Institute?

The class of safety vest that offers the highest level of visibility according to the American National Standards Institute (ANSI) is Class 3. This classification is designed for work environments where high-speed traffic is present and where workers must be visible from all directions. Class 3 vests have the most reflective material and bright colors, ensuring that they stand out even in low-light conditions.

In contrast, Class 1 vests provide minimal visibility and are suitable for areas with little or no traffic. Class 2 vests enhance visibility but are not as effective as Class 3 vests since they may not offer coverage needed for those in high-risk situations where visibility requirements are crucial. Class 4 does not exist in the ANSI classification system. Therefore, Class 3 is confirmed as the safest choice for maximum visibility and is utilized in higher-risk environments, such as highway work zones or areas with fast-moving vehicular traffic.