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What are the requirements of ANSI/ISEA 107
Class 2 and 3 for high visibility clothing?

1. Requirement of visible material

The initial retro reflection coefficient for Level 2 retro reflective or combined-performance material shall exceed 330cd/(lx • m2) at observation angle 12° and entrance angle 5°; while the initial retro reflection coefficient for Level 1 retro reflective or combined-performance material shall exceed 65 cd/(lx ∙ m2).

2. Garment Design

1) For Performance Class 3, the retroreflective or combined performance material incorporated into the garment shall not be less than 50 mm. For Performance Class 2, the width shall not be less than 35 mm. And for Performance Class 1, the width shall not be less than 25 mm; but if there is no background material, then the width of combined-performance material shall not be less than 50 mm.

2) The spacing between multiple bands shall be at least equal to the band width.

3) The bottom of the lowest torso band shall be at least 50 mm above the bottom edge. If more than one horizontal band is applied, the horizontal bands shall be at least 50 mm apart. Interruptions by retro reflective stripes are not counted.

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