Reference

Hi-vis colors and retroreflective tape do two different jobs: fluorescent backgrounds boost daytime conspicuity, while reflective tape returns headlights to make a worker visible at night. ANSI/ISEA 107-2020 permits yellow-green, orange-red, and red. This guide decodes each color, explains the day-vs-night split, and walks a worked example.

OSHA has no standalone high-visibility clothing standard; it requires hi-vis in specific contexts and otherwise enforces through the General Duty Clause and 1910.132 hazard assessment. This distinction trips up safety managers. This guide covers OSHA's construction rules, the MUTCD/ANSI 107 highway requirement, and a worked jobsite example.