 | X = Surface of fluorescent and retro - reflecting material - 3 levels Y = Quality of the retro-reflecting materials - 2 Levels |
 | Class 3: Highest Level Highest level of protection - required for any persons working on or near motorways or dual-carriage ways or airports. Must incorporate a minimum of 0.80m2 of background material and 0.20m2 of retro reflective materials. |
 | Class 2: Intermediate Level 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 retro reflective material. |
 | Class 1: Minimum Level 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 0.13m2 of retro-reflective material. |