Whether directing traffic, responding to an emergency, working along a highway, or operating equipment in a busy industrial environment, being seen can be a matter of life and death.
High-visibility safety apparel, commonly called hi-vis clothing, is designed to make workers more noticeable in environments where moving vehicles, heavy machinery, poor lighting, or other hazards create a risk of injury.
However, not all high-visibility garments offer the same level of protection. Understanding ANSI safety ratings can help workers, supervisors, and purchasing departments select the appropriate clothing for their particular duties.
What Are ANSI High-Visibility Standards?
In the United States, high-visibility safety apparel is generally evaluated according to the ANSI/ISEA 107 standard, developed by the American National Standards Institute and the International Safety Equipment Association.
The standard establishes requirements for the design, materials, visibility, and performance of high-visibility safety garments.
ANSI/ISEA 107 classifies garments using two separate designations:
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Types, which identify the general work environment and intended application.
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Performance Classes, which establish minimum amounts of fluorescent background material and retroreflective material.
Understanding both designations is important when selecting high-visibility clothing.
Understanding High-Visibility Garment Types
Type O: Off-Road Applications
Type O garments are intended for workers in environments where they are not exposed to public roadway traffic but still face potential hazards from moving equipment or vehicles.
Examples include:
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Warehouse and distribution center employees
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Construction workers operating away from public roadways
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Manufacturing and industrial personnel
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Workers in loading yards and private facilities
Type O garments are classified as Performance Class 1.
These garments provide enhanced visibility in lower-risk environments but are not intended as substitutes for garments required for roadway work.
Type R: Roadway Applications
Type R garments are designed for workers exposed to public roadway traffic or vehicles and equipment operating in roadway work zones.
Typical users include:
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Highway construction and maintenance crews
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Roadside utility workers
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Traffic control personnel
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Tow truck and roadside assistance operators
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Workers performing duties near moving traffic
Type R garments are available in Performance Classes 2 and 3.
The appropriate class depends on factors such as traffic exposure, visibility conditions, worker tasks, and applicable regulations.
Type P: Public Safety Applications
Type P garments are designed specifically for emergency responders and public safety personnel.
These include:
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Police officers
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Firefighters
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Emergency medical services personnel
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Other qualifying public safety responders
Public safety personnel often require garments that accommodate duty belts, equipment, rapid movement, and identification markings.
Type P garments are available in Performance Classes 2 and 3 and are designed to address the operational requirements of these professions.
Importantly, Type P is not automatically the appropriate designation for every public safety assignment. Agency policies, roadway regulations, and specific job hazards should determine the required apparel.
Understanding ANSI Performance Classes
While garment Types describe intended applications, Performance Classes describe minimum visibility-material requirements.
Performance Class 1
Class 1 garments provide the lowest level of visibility coverage recognized by ANSI/ISEA 107.
They are intended for Type O off-road environments where workers need to be more noticeable but are not exposed to public roadway traffic.
A Class 1 vest may be appropriate for certain warehouse, industrial, or private-property operations.
Performance Class 2
Class 2 garments incorporate larger areas of fluorescent background material and retroreflective material than Class 1 garments.
They are commonly used by road crews, utility workers, traffic control personnel, and emergency responders.
Class 2 garments are designed to improve worker conspicuity in environments involving moving vehicles and equipment.
For many roadway and public safety applications, Class 2 is a commonly specified minimum level of protection, although the actual requirement depends on the circumstances.
Performance Class 3
Class 3 provides the highest visibility coverage within the ANSI/ISEA 107 performance-class system.
Class 3 apparel requires more extensive visible material and a design that helps communicate the shape and movement of the wearer, including specified visibility features on sleeves or arms.
It is particularly relevant to higher-exposure environments where recognizing a worker from a greater distance or under challenging visibility conditions is important.
Examples include certain nighttime roadway operations, highway maintenance activities, and emergency response assignments.
A Class 3 designation does not mean that the garment eliminates the risk of being struck by a vehicle. Proper traffic control, lighting, positioning, and other safety procedures remain essential.
Fluorescent vs. Retroreflective Materials: What's the Difference?
High-visibility clothing generally uses two different types of visibility-enhancing materials.
Fluorescent background material helps workers stand out during daylight and certain low-light conditions. Common ANSI-recognized colors include fluorescent yellow-green, fluorescent orange-red, and fluorescent red.
Retroreflective material returns light toward its source, making the wearer more visible when illuminated by vehicle headlights, flashlights, or other light sources.
Both serve important but different purposes.
Fluorescent material enhances daytime visibility, while retroreflective material is especially important in darkness when an external light source is present.
Simply wearing a brightly colored jacket or vest does not necessarily mean that it meets ANSI/ISEA 107 requirements. Certified garments must satisfy specific material, coverage, design, and performance criteria.
Are All High-Visibility Jackets and Vests ANSI-Compliant?
No. This is an important distinction for purchasing departments and individual buyers.
A jacket described as high visibility, safety orange, or fluorescent yellow may not meet ANSI/ISEA 107 requirements.
Some garments are designed primarily for general visibility, outdoor recreation, hunting, or casual use rather than occupational safety compliance.
When purchasing apparel for workplace or public safety use, look for a manufacturer's label identifying the applicable ANSI/ISEA 107 edition, garment Type, and Performance Class.
Buyers should also verify any additional requirements established by their employer, agency, or governing authority.
What About High-Visibility Rainwear and Outerwear?
High-visibility requirements are not limited to lightweight safety vests.
Many manufacturers offer ANSI-rated:
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Waterproof rain jackets and rain pants
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Insulated winter parkas
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Soft-shell jackets
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Traffic safety vests
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Work shirts and sweatshirts
However, the visibility rating of one garment does not automatically apply to another garment worn with it.
Certain compliant combinations of garments may qualify as a Class 3 ensemble even when individual components carry different classifications. Such combinations should be verified against the manufacturer's specifications and applicable standard.
This is especially important when purchasing cold-weather or foul-weather apparel for police, fire, EMS, and highway personnel.
Special Considerations for Police, Fire, and EMS Personnel
Emergency responders face unique challenges when working near traffic.
Police officers may need immediate access to duty belts and equipment. Firefighters and EMS personnel may need to work around vehicles, medical equipment, and emergency apparatus.
High-visibility clothing for these applications should provide appropriate visibility without unnecessarily restricting movement or interfering with essential equipment.
Public safety agencies should also consider other applicable standards and regulations. For example, high-visibility roadway apparel is not automatically suitable for firefighting, flame exposure, electrical hazards, or other specialized operations.
The proper garment should be selected based on the hazards of the assignment rather than visibility ratings alone.
Choosing the Right High-Visibility Apparel
When selecting high-visibility workwear, consider the following questions:
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Will the wearer be exposed to public roadway traffic or only to vehicles and equipment on private property?
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Will the work take place during daylight, nighttime, or both?
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Does the assignment involve moving traffic, heavy machinery, or other visibility hazards?
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Does the employer or agency require a particular ANSI Type or Performance Class?
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Will the garment need to accommodate duty equipment, weather protection, or additional personal protective equipment?
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Does the manufacturer's label verify the required compliance?
Selecting the appropriate garment involves more than choosing the brightest available color. The goal is to provide visibility appropriate to the work environment while maintaining comfort, mobility, and compliance with applicable safety requirements.
Final Thoughts
High-visibility safety apparel plays an important role in protecting workers and emergency responders operating around vehicles, equipment, and other potential hazards.
Understanding the differences between ANSI Types O, R, and P and Performance Classes 1, 2, and 3 helps purchasing departments, safety officers, and individual workers make more informed decisions.
At Uniform Tactical Supply, we provide professional uniforms, outerwear, and duty apparel for law enforcement, fire departments, emergency services, and other demanding work environments.
When selecting high-visibility apparel, always confirm the manufacturer's stated safety classification and ensure that the garment meets the requirements of your particular assignment.
Click here to view our collection of high-visibility apparel from trusted manufacturers such as Game Sportswear, Liberty Uniform, Propper, Liberty Uniform, and more.
Safety note: This article provides general educational information and is not a substitute for applicable OSHA requirements, federal or state roadway regulations, agency policies, or the full ANSI/ISEA 107 standard.