What color vest or jacket must flaggers always wear?

Flaggers are required to wear an orange or green vest or jacket to maximize visibility and safety in work zones. The use of these bright colors ensures that they can be easily seen by oncoming vehicles and workers in the area. Orange is traditionally associated with safety and construction, making it a recognizable choice for signaling caution. Green is also a high-visibility color that complements the orange and is often used for safety apparel as well.

This requirement is based on safety standards aimed at reducing the risk of accidents in active work zones, where flaggers serve a critical role in directing traffic and ensuring the safety of both motorists and construction personnel. The choice of these colors adheres to industry regulations which prioritize high visibility to prevent accidents, especially in conditions of low light or inclement weather.