Everyone recognizes bright yellow or orange vests as integral to industrial or construction jobsites. This is hi-vis gear, designed to keep workers visible to coworkers, equipment operators, the world around them, and sometimes even themselves. And if you work in a job that requires personal protective equipment, you’re probably familiar with this fact. But what you might not realize is that hi-vis gear is rated differently, depending on the level of visibility it promotes.
That’s where ANSI ratings enter the picture, and we’re here to help you understand them. After all, wearing the wrong equipment for your job isn’t just a whoopsie. It’s a serious risk to your well-being. Read on to explore the differences between ANSI Class 2 and Class 3, and what those differences mean for hi-vis safety.
What ANSI Means
ANSI stands for the American National Standards Institute. They set the rules for hi-vis safety gear through a standard called ANSI/ISEA 107. This standard defines how much reflective material and fluorescent background material a garment needs to qualify for each class. The higher the class, the more visibility protection it provides. You can think of it as a scale that matches your gear to your risk level.
What Is ANSI Class 2?
Class 2 hi-vis gear is designed for workers who are exposed to traffic moving at speeds between 25 and 50 mph, or who work in environments with higher-than-normal background distractions. That includes things like heavy machinery nearby, complex visual environments, or poor lighting conditions.
To qualify as Class 2, a garment needs at least 775 square inches of fluorescent background material and at least 201 square inches of retroreflective striping. You’ll find Class 2 gear on airport ground crews, school crossing guards, parking and toll booth workers, warehouse workers, and road crews operating in lower-speed zones.
What Is ANSI Class 3?
Class 3 hi-vis safety gear is the highest level of visibility protection available in the ANSI/ISEA 107 standard. It’s built for workers who face the greatest exposure to high-speed traffic, typically at speeds above 50 mph. It’s also for people who work in conditions where they need to be visible from a greater distance and in all positions, not just when they’re standing upright.
Class 3 garments require at least 1,240 square inches of fluorescent background material and at least 310 square inches of retroreflective striping. The reflective material also has to cover the arms and legs, not just the torso, so drivers can identify you as a human figure from farther away. Highway construction workers, utility workers near high-speed roads, and emergency responders are common Class 3 wearers.
The Visibility Gap Between Class 2 and Class 3
Class 2 gear makes you visible from roughly 1,000 feet away under normal nighttime conditions. Class 3 gear pushes that to around 1,280 feet or more, and because it covers the limbs, it creates a full-body silhouette that’s easier for drivers to recognize at speed.
At 65 mph, a vehicle travels about 95 feet per second. Every extra foot of visibility gives a driver more time to react. That’s not a small distinction. At highway speeds, the difference between Class 2 and Class 3 hi-vis safety is the difference between a driver seeing you in time to stop and not seeing you at all.
Colors, Materials, and Performance Classes
Both Class 2 and Class 3 gear come in fluorescent yellow-green, fluorescent orange-red, or fluorescent red. Yellow-green has the highest daytime visibility because it contrasts well with most natural backgrounds. Orange is easier to spot against green vegetation and is often preferred in forestry and utility work.
Beyond the class rating, ANSI/ISEA 107 also assigns performance classes to the retroreflective material itself. Type O (off-road), Type R (road), and Type P (public safety) are the three categories you'll see most often. Type O is the baseline, built for environments without traffic exposure, like warehouses or indoor job sites. However, Type 0 never meets Class 2 or 3 standards.
That’s why Type R and Type P exist, which carry stricter requirements and are built for roadway and emergency response use. Within Type R and P, you can find Class 2 and Class 3 options, designed to accommodate varying levels of protection needs for each industry.
How to Read a Hi-Vis Label
Every compliant garment will have a label inside that lists the ANSI/ISEA 107 standard, the class (1, 2, or 3), the type (O, R, or P), and the performance level for the retroreflective material. If a vest or jacket doesn’t have this label, it’s not certified, and you shouldn’t count on it to protect you.
Some garments also carry additional ratings for flame resistance, arc flash protection, or cut resistance. These combined ratings are essential if you face multiple hazards at your job. A vest that meets hi-vis requirements but melts in heat or tears easily isn’t doing its full job if you need heat and cut resistance.
When Your Employer or OSHA Requires Class 3
The Federal Highway Administration requires Class 3 gear for all workers in the right-of-way of federal-aid highways when vehicles travel above 50 mph. OSHA references the ANSI/ISEA 107 standard and defers to FHWA requirements for highway work. Many state DOTs also mandate Class 3 for flaggers and anyone working directly adjacent to active travel lanes.
If you’re in a supervisory role on a job site, it’s worth checking your specific state and federal requirements. Class 2 covers a lot of situations, but if there’s any chance workers are near high-speed roadways, Class 3 is the right call and often the required one.
Cold Weather Considerations
One common issue in colder months is workers layering noncompliant gear over their hi-vis garments, which can cover up the reflective striping and kill the visibility rating entirely. If you need warmth, the outer layer has to be the compliant hi-vis piece, or you need to wear a compliant hi-vis garment that’s rated for cold weather.
There are Class 3 jackets, parkas, and rain gear designed specifically for this. They’re built to maintain full compliance even in winter conditions. Don’t assume your regular work jacket plus a vest on top meets requirements. Check the label and ensure the reflective striping on your outer layer is fully unobstructed.
Buy Reliable Hi-Vis Gear
Now that you understand the differences between ANSI Class 2 and Class 3, you can employ better hi-vis safety at work. And when it’s time to buy your PPE, Forcefield Protective Clothing has you covered. We carry everything, from the essential construction site orange and yellow vests to the more niche hi-vis cut-resistant gloves. Everything we carry is certified by the relevant governing bodies, including ANSI, and you’ll find the class and type labeling in our product descriptions. Browse our inventory today, reach out with any questions, and show up to work equipped to perform safely.