High-visibility (hi-vis) clothing is an essential part of Personal Protective Equipment (PPE) for workers in construction, roadwork, logistics, and other high-risk environments. These garments are designed to make workers more visible in low-light conditions, poor weather, and areas with moving vehicles or machinery.
Hi-vis clothing is classified into three different safety classes: Class 1, Class 2, and Class 3, each offering different levels of visibility and protection. Understanding these differences helps employers choose the right safety gear for their workers.
What Is Hi-Vis Clothing?
High-visibility clothing is PPE designed with fluorescent fabrics and reflective strips that make workers easily visible during the day and at night.
These garments are commonly worn by workers in industries where visibility is critical for safety, such as construction, road maintenance, and traffic control.
What Do Hi-Vis Classes Mean?
Hi-vis clothing classes are based on the amount of reflective material and fluorescent fabric used on the garment. The higher the class number, the greater the visibility and protection.
These classifications help ensure workers are visible at different distances and in different working environments.
Class 1 Hi-Vis Clothing
Class 1 garments provide the lowest level of visibility protection.
They are typically used in low-risk work environments where workers are separated from traffic or heavy machinery.
Examples of Class 1 Hi-Vis Clothing
- Lightweight safety vests
- Hi-vis T-shirts used in warehouses
- Basic reflective clothing for site visitors
Suitable for
- Warehouse workers
- Parking attendants
- Workers in areas with low traffic speeds
Class 1 garments are generally suitable for environments where vehicle speeds do not exceed about 40 km/h.
Class 2 Hi-Vis Clothing
Class 2 garments offer moderate visibility protection and are commonly used on construction sites and roadside work environments.
These garments include more reflective tape and fluorescent material than Class 1 clothing.
Examples of Class 2 Hi-Vis Clothing
- Hi-vis safety vests with reflective strips
- Long-sleeve hi-vis shirts
- Safety jackets used on construction sites
Suitable for
- Construction workers
- Road maintenance crews
- Airport ground staff
- Utility workers
Class 2 hi-vis clothing is designed for environments where vehicle speeds may reach 80 km/h and where workers need greater visibility.
Class 3 Hi-Vis Clothing
Class 3 provides the highest level of visibility protection. These garments include the largest amount of fluorescent fabric and reflective tape.
They are designed for workers in high-risk environments with fast-moving traffic or poor visibility conditions.
Examples of Class 3 Hi-Vis Clothing
- Hi-vis jackets with reflective sleeves
- Full-body reflective rain suits
- High-visibility coveralls
Suitable for
- Highway construction workers
- Emergency responders
- Traffic control personnel
- Workers in extremely low-visibility environments
Class 3 garments ensure workers are visible from greater distances and from multiple angles.
Quick Comparison of Hi-Vis Classes
| Class | Visibility Level | Typical Use |
| Class 1 | Low | Warehouses, parking areas |
| Class 2 | Medium | Construction sites, roadwork |
| Class 3 | High | High-speed roads, emergency work |
How to Choose the Right Hi-Vis Clothing
Selecting the correct hi-vis PPE depends on several factors:
Work environment – Areas with heavy machinery or vehicles require higher visibility.
Traffic speed – Faster traffic requires higher-class garments.
Lighting conditions – Night work or low-light environments require more reflective materials.
Body coverage – Jackets and coveralls provide greater visibility than vests.
Why Hi-Vis Clothing Is Important for Workplace Safety
High-visibility clothing significantly reduces the risk of accidents involving vehicles or heavy machinery. When workers are clearly visible, operators and drivers can react sooner, preventing collisions and injuries.
Employers are responsible for ensuring workers wear the appropriate PPE in hazardous environments, including high-visibility clothing where required.
Understanding the difference between Class 1, Class 2, and Class 3 hi-vis clothing helps businesses choose the right PPE for their workers. The correct hi-visibility garments improve worker safety, increase visibility in dangerous environments, and support compliance with workplace safety requirements.
Selecting the right hi-vis clothing is a simple but critical step toward maintaining a safer worksite.