High-visibility

adjectiveStandard termFire & Safety

Designed with fluorescent colors and retroreflective materials to make personnel easily seen in dangerous environments.

Garments and equipment made with this material contrast sharply against complex backgrounds to prevent struck-by accidents. The base material uses fluorescent dyes that convert invisible ultraviolet light into visible light, making them glow brightly during the day. Retroreflective bands bounce artificial light directly back to the source, ensuring workers remain visible to drivers and equipment operators at night.

Heard on the job

Everyone on the highway scene needs to have their high-visibility vests on right now.

Insider tip

Standards like ANSI 107 dictate exactly how many square inches of fluorescent and reflective material are required for different roadway speeds.

Also heard as

  • hi-vis
  • high-vis