EN ISO 20471 is a European standard that specifies requirements for high-visibility clothing. It is designed to ensure that the clothing provides adequate visibility of the wearer in hazardous situations under any daylight conditions and under illumination by vehicle headlights in the dark. The standard is applicable to professional use and is often required for workers in environments where visibility is crucial for safety, such as construction sites, roadwork, and emergency services.
Key aspects of EN ISO 20471 include:
Material Requirements: The standard specifies the minimum amounts of fluorescent and retro-reflective materials that must be used in the clothing. Fluorescent materials enhance visibility during daylight, while retro-reflective materials improve visibility in low-light conditions when illuminated by headlights.
Color Requirements: The clothing must be made in specific fluorescent colors (yellow, orange-red, or red) that provide high visibility.
Design and Performance: The standard outlines design requirements to ensure that the clothing covers a sufficient area of the body and that the materials maintain their visibility properties over time, including after washing and exposure to various environmental conditions.
Classification: High-visibility clothing is classified into three classes based on the minimum area of high-visibility material:
Class 1: Provides the lowest level of visibility and is suitable for low-risk environments.
Class 2: Offers intermediate visibility and is suitable for higher-risk environments.
Class 3: Provides the highest level of visibility and is required for the most hazardous conditions.
Marking and Labeling: Garments compliant with EN ISO 20471 must be marked with the standard number, the class of the garment, and care instructions to ensure proper maintenance of visibility properties.
EN ISO 20471 replaced the previous standard EN 471 in 2013, incorporating updates to improve safety and performance requirements. Compliance with this standard helps ensure that workers are easily seen, thereby reducing the risk of accidents and enhancing overall safety in hazardous environments.
