Understanding ANSI High-Visibility Safety Apparel: Class 1, Class 2, and Class 3 Explained

High-visibility safety apparel plays a critical role in protecting workers who operate near traffic, heavy machinery, or low-light environments. These garments are designed to make the wearer more visible, reducing the risk of accidents.

In the United States, high-visibility clothing follows the ANSI/ISEA 107 standard, which classifies garments into Class 1, Class 2, and Class 3 based on visibility level and work environment.

Understanding these classes can help workers and employers choose the right level of protection.

What Is ANSI/ISEA 107?

ANSI stands for the American National Standards Institute, while ISEA is the International Safety Equipment Association.

The ANSI/ISEA 107 standard defines the requirements for high-visibility safety apparel, including:

• Minimum reflective material

• Minimum fluorescent background material

• Placement of reflective strips

• Garment design requirements

The goal is simple: make workers visible from a greater distance, both during the day and at night.

Class 1: Basic Visibility Protection

Class 1 garments provide the lowest level of visibility protection under the ANSI standard.

They are designed for workers in environments where traffic is moving slowly and there is sufficient separation from vehicles.

Typical use cases

• Warehouse workers

• Parking lot attendants

• Delivery personnel

• Workers in low-risk environments

Key characteristics

• Minimal reflective material

• Usually safety vests

• Suitable for areas with traffic under 25 mph

Class 1 garments improve visibility but are generally used in controlled or low-risk environments.

Class 2: Enhanced Visibility for Higher Risk Areas

Class 2 safety apparel provides greater visibility than Class 1 and is commonly required for workers near roadways or moving equipment.

These garments include more fluorescent material and reflective striping to increase visibility during both day and night.

Typical use cases

• Construction workers

• Utility workers

• Crossing guards

• Airport ground crews

• Survey crews

Key characteristics

• Larger reflective strip coverage

• Fluorescent background colors such as neon yellow or orange

• Suitable for traffic speeds up to 50 mph

Many high-visibility safety vests and T-shirts fall into the Class 2 category.

Class 3: Maximum Visibility and Worker Safety

Class 3 provides the highest level of visibility protection.

These garments are designed for workers who operate in high-speed traffic areas or very low-light environments, where maximum visibility is critical.

Typical use cases

• Highway construction workers

• Roadside emergency responders

• Traffic control personnel

• Utility repair crews working at night

Key characteristics

• Maximum reflective coverage

• Reflective material on sleeves, torso, and shoulders

• Full-body visibility from long distances

• Suitable for traffic speeds above 50 mph

Common Class 3 garments include high-visibility jackets, hoodies, and full-sleeve shirts.

Why Reflective Placement Matters

High-visibility garments are not just bright colors. The placement of reflective tape is designed to highlight the natural movement of the human body.

When light from headlights hits reflective strips on the arms, shoulders, and torso, drivers can quickly recognize the shape of a person—even from a distance.

This recognition significantly improves reaction time and reduces accident risks.

Choosing the Right High-Visibility Gear

Selecting the right ANSI class depends on three key factors:

1. Traffic speed in the work area

2. Distance between workers and vehicles

3. Lighting conditions

In general:

• Class 1: Low risk environments

• Class 2: Moderate risk near traffic

• Class 3: High risk and high-speed traffic

Wearing the appropriate high-visibility apparel ensures that workers remain visible and protected throughout the workday.