EN 471:2003 + A1:2007

High visibility warning clothing for professional use - test methods and requirements

This European Standard specifies requirements for protective clothing capable of signalling the user's presence visually, intended to provide conspicuity of the user in hazardous situations under any light conditions by day and under illumination by vehicle headlights in the dark. On all garments the retro-reflective tape must not be less than 50mm wide.

The EN 471 standard has 3 classes:

Class 1: Minimum level of protection required for any persons working on a private road or to be used in conjunction with a higher classed garment. Must incorporate a minimum of 0.14m² of background material and 0.10m² of retroreflective materials.
Class 2: Required for any persons working on or near A and B class roads, also for delivery drivers. Must incorporate a minimum of 0.50m² of background material and 0.13m² of retroreflective materials.
Class 3: Highest level of protection - required for any persons working on or near motorways or dual-carriageways or airports. Must incorporate a minimum of 0.80m² of background material and 0.20m² of retro-reflective materials.