Struck-by incidents with vehicles and equipment are a major cause of jobsite injuries. High-visibility clothing helps drivers and operators see workers in time.
In this article
When it is required
Near traffic, moving equipment and in work zones, and whenever the site safety plan says so.
Classes
Garments are rated in classes based on visibility. Higher-speed traffic usually calls for a higher class.
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Traffic work
Follow the traffic control plan and the class it specifies.
Night work
Reflective material matters most at night. Add lights to equipment and lighting to the work area.
Condition
Faded or dirty vests lose visibility. Replace them when they no longer stand out.
Fit
Vests should be closed and not hidden under jackets.
Enforcement
Make hi-vis part of the entry check at the gate.
Common mistakes
Torn vests, vests under jackets and the wrong class for traffic work.
Visitors too
Inspectors, delivery drivers and visitors need hi-vis in work zones. Keep spare vests at the entrance.
Combine with other controls
Hi-vis works best with spotters, barriers and clear traffic routes, not instead of them.
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Frequently asked questions
When is high-visibility clothing required?
It is commonly required near traffic, moving equipment and in work zones. Check OSHA, your state and the project's traffic control plan for the specific requirements.