What ANSI 107 Actually Means
When people say a vest is "ANSI rated," they are talking about ANSI/ISEA 107, the standard published by the International Safety Equipment Association. It sets the performance rules for high-visibility safety apparel: how much bright-background fabric a garment carries, how much reflective tape it has, and where that material is positioned on the body.
The standard sorts apparel into three types based on the work environment:
- Type O (off-road): for workers away from public traffic, such as in warehouse yards or parking areas.
- Type R (roadway): for anyone exposed to public traffic or construction vehicles.
- Type P (public safety): for police, fire, and EMS who need visibility plus room for their gear.
Type O apparel is always Class 1. Type R and Type P apparel come in Class 2 or Class 3. For road crews, you live almost entirely in Type R, which means your real choice is Class 2 or Class 3.
The Three Classes Of High-Visibility Apparel
Understanding the types of vests on the market starts with the three performance classes. More fabric and more coverage move you up the scale.
- Class 1: The lowest level of high visibility. Fine for off-road, low-speed settings under 25 mph. Think parking attendants or warehouse staff, not roadway crews.
- Class 2: The baseline for anyone working near moving traffic. It carries at least 775 square inches of background material and more reflective tape than Class 1.
- Class 3: The highest visibility level, with at least 1,240 square inches of background material and coverage that reaches the arms, and sometimes the legs.
Class 2 vs Class 3: The Difference That Matters
Class 2 makes a worker visible. Class 3 makes a worker unmissable from every angle, including in the dark.
A Class 2 garment is usually a vest. It wraps the torso in bright fabric and reflective tape, which is enough for daylight work in moderate traffic. A Class 3 garment has to cover more of the body, so it includes sleeves or is paired with matching high-visibility trousers or sleeves to meet the coverage minimum. That added material is what lets a driver pick out the shape of a human being at highway speed or in headlights, instead of just a floating glow.
The factors that push a job from Class 2 up to Class 3 are speed, light, and complexity:
- Traffic speed: The faster vehicles move, the sooner a driver needs to see the worker. High-speed corridors call for Class 3.
- Lighting: Night work, dusk, dawn, fog, and rain all reduce sight distance. Low light points to Class 3.
- Task and background: Crews on foot near equipment, in cluttered visual backgrounds, or with their attention on the work, benefit from the extra coverage.
When Is Each Class Required On A Job Site
This is where a lot of foremen get tripped up, because the answer is not only a matter of preference. It is federal law.
The FHWA Worker Visibility Rule, found in 23 CFR Part 634, requires every worker inside the right-of-way of a federal-aid highway who is exposed to traffic or construction equipment to wear high-visibility apparel that meets ANSI/ISEA 107. In plain terms, Class 2 is the floor for roadway crews. There is no compliant option below it once you are near public traffic.
Where are Class 2 safety vests required? On most daytime roadway work in moderate-speed zones: flagging in a 35 mph corridor, utility crews in the right-of-way, survey teams, and general construction near active lanes. It is the everyday standard for a lot of what road crews do.
Class 3 becomes the expectation when risk climbs. Reach for Class 3 apparel for high-speed highway work, any nighttime operation, poor-weather visibility, and situations where flaggers or spotters stand directly in the path of oncoming traffic. Many state DOTs and prime contractors write Class 3 into their specs for these conditions, so it pays to read the contract before the crew shows up in vests alone.
Common Questions From The Field
Do all Class 3 vests have sleeves? Not always as a single piece, but the coverage has to be there. A garment reaches Class 3 either by having built-in sleeves or by combining a Class 3 vest with high-visibility sleeves or trousers. A plain sleeveless vest cannot meet Class 3 on its own.
Is there such a thing as a "Class 2 Level 2" vest? That phrasing usually mixes up two things. ANSI 107 uses performance classes, not levels. If a spec calls for Class 2, you need a Class 2 garment. Keep it simple and match the class named in the standard.
Does the vest need to be a specific color? ANSI 107 allows fluorescent yellow-green, fluorescent orange-red, or fluorescent red as compliant background colors. Crews often standardize on one, so workers read as a unit and stand out against the job's specific backdrop.
Getting Your Crew Compliant
AQC handles the compliance details, so matching the class to the work zone is no longer one more thing on your plate. Vest class is one piece of a larger safety picture that also covers signage, spacing, and trained flaggers. If you would rather not track PPE inventory on top of everything else, our work zone equipment rentals include flagging gear and PPE, and every ATSSA-certified flagging crew we send shows up in the right apparel for the conditions.
Get the class right, and you protect your people and your inspection record at the same time. When you want a partner who handles the compliance details so you can focus on the job, request a quote from AQC, or call us today, and we will help you set up a work zone that meets the standard from the first cone to the last.
