ANSI/ISEA 107-2010 guidelines are divided into three classes according to the level of risk present in the working environment:
Class 2 [Minimum Requirements]
Visible Background 755 Sq. Inches
Visible Reflective 201 Sq. Inches
Minimum Reflective Width 1.375 Inches
Class 3 [Minimum Requirements]
Visible Background 1240 Sq. Inches
Visible Reflective 310 Sq. Inches
Minimum Reflective Width 2 Inches
