High-visibility workwear saves lives. But only if it meets the correct standard for your region, industry, and working environment. Wearing the wrong class of hi-vis garment is not just a compliance risk — it can be a fatal one.

This guide provides a comprehensive overview of the major hi-vis workwear standards used worldwide, explains the classification systems, and helps you determine exactly which standard and class your workers need.

Why Hi-Vis Standards Exist

High-visibility clothing is designed to make the wearer conspicuous in hazardous environments — roadways, construction sites, airports, railways, warehouses, and any location where workers share space with vehicles or heavy machinery.

Standards define the minimum area of fluorescent and retroreflective material a garment must incorporate to ensure the wearer is visible in both daylight and low-light conditions. Without these standards, there would be no reliable way to verify that a garment actually provides adequate visibility.

EN ISO 20471: The European Standard

EN ISO 20471 is the primary standard for high-visibility clothing in Europe and is widely adopted globally. It specifies requirements for color, retroreflection, minimum areas of visible material, and garment design.

The Three Classes of EN ISO 20471

Key principle: The higher the risk, the higher the class required. Workers on or near active roadways, railways, or airfields must wear Class 3 garments.

Color Requirements

EN ISO 20471 permits three fluorescent background colors:

• Fluorescent yellow-green — Most common; best daytime visibility
• Fluorescent orange-red — Common in road construction and rail
• Fluorescent red — Used in specific applications (e.g., emergency services in some countries)

Retroreflective Tape Requirements

Retroreflective tape must encircle the torso and, for Class 3 garments, the sleeves and/or legs. The tape must meet specific minimum widths (50 mm for horizontal bands) and be arranged so the wearer is visible from all angles — front, back, and sides.

ANSI/ISEA 107: The North American Standard

ANSI/ISEA 107-2020 (American National Standards Institute / International Safety Equipment Association) is the governing standard for high-visibility safety apparel in the United States and Canada.

ANSI/ISEA 107 Garment Types

Unlike EN ISO 20471’s class-only system, ANSI/ISEA 107 categorizes garments by type (purpose) and class (visibility level):

ANSI/ISEA 107 Performance Classes

Class 3 provides the highest visibility and is mandatory for roadway workers in most US jurisdictions under MUTCD (Manual on Uniform Traffic Control Devices) requirements.

EN ISO 20471 vs ANSI/ISEA 107: Key Differences

Important: A garment certified to EN ISO 20471 Class 3 is not automatically compliant with ANSI/ISEA 107 Class 3, and vice versa. If you supply workers in both European and North American markets, you may need dual-certified garments or separate product lines.

Other Hi-Vis Standards Around the World

How to Choose the Right Standard and Class

Selecting the correct hi-vis garment depends on three factors:

1. Geography — Where will the garment be worn? Europe requires EN ISO 20471; North America requires ANSI/ISEA 107; Australia requires AS/NZS 4602.1.
2. Risk level — Workers near active traffic or heavy machinery need the highest class (Class 3). Workers in low-traffic or controlled environments may be adequately protected at Class 1 or 2.
3. Working conditions — Night work, poor weather, and complex backgrounds (e.g., lots of signage) all increase the need for higher retroreflective performance.

Choosing a Hi-Vis Manufacturer: What to Look For

Not all hi-vis garments are created equal. When sourcing from a work uniform manufacturer, verify:

• Garments are tested and certified to the specific standard required (not just claimed)
• Test reports from accredited labs (SGS, Intertek, Bureau Veritas) are available
• Retroreflective tape meets the required wash-cycle durability (typically 25–50 washes)
• Fluorescent fabric maintains color fastness after laundering
• The manufacturer has experience producing hi-vis garments (ask for references)
• Custom designs maintain the required minimum areas of visible material

UniWorkWear Hi-Vis Capabilities

UniWorkWear manufactures a full range of hi-vis workwear certified to EN ISO 20471 and ANSI/ISEA 107. Our capabilities include:

• Class 1, 2, and 3 garments — Vests, jackets, shirts, trousers, coveralls, and rain wear
• Custom design — Full OEM/ODM service to develop hi-vis garments to your exact specifications
• Dual certification — Garments designed to meet both EN ISO 20471 and ANSI/ISEA 107 where required
• In-house testing — Retroreflective and fluorescent material tested for wash durability and color fastness
• Premium materials — 3M Scotchlite retroreflective tape and certified fluorescent fabrics

Frequently Asked Questions

What is the difference between Class 2 and Class 3 hi-vis?

Class 3 garments require significantly more fluorescent and retroreflective material than Class 2, making the wearer visible from a greater distance and from more angles. Class 3 is required for workers on or near active roadways.

Can a hi-vis vest meet Class 3?

Under EN ISO 20471, a vest alone typically cannot achieve Class 3 because it lacks sleeves and thus insufficient retroreflective area. A Class 3 garment usually requires sleeves (jacket or coverall). Under ANSI/ISEA 107, similar area requirements apply.

How many washes should hi-vis workwear withstand?

EN ISO 20471 requires garments to maintain performance after a minimum number of wash cycles (typically 25–50, depending on the garment type). Retroreflective tape and fluorescent fabric must be tested after washing to confirm they still meet the standard.

Is EN ISO 20471 accepted in the United States?

EN ISO 20471 is not officially recognized by US regulatory bodies (OSHA, MUTCD). Workers in the US must wear ANSI/ISEA 107-compliant garments. However, many EN ISO 20471 garments meet or exceed ANSI requirements — dual certification is possible.

What color should I choose for hi-vis workwear?

Fluorescent yellow-green provides the best daytime visibility in most environments. Fluorescent orange-red is preferred for road construction and rail applications. Your choice may also be dictated by industry regulations or company policy.

Final Thoughts

Hi-vis workwear standards exist to protect lives. Understanding the difference between EN ISO 20471 and ANSI/ISEA 107, knowing which class your workers need, and sourcing from a certified manufacturer are not optional steps — they are essential responsibilities.

Partner with a manufacturer who understands these standards inside and out, tests every batch, and can produce custom hi-vis garments that meet the exact requirements of your market and your workforce.