What Changed in AS 4602.1:2024: The New Level System Explained

Key Takeaways

• AS 4602.1:2024 is the current Australian standard for high-visibility safety garments, published on 28 June 2024.
• Levels 1, 2, and 3 now apply within Class N and Class D/N, linking garment selection to site risk, not just lighting conditions.
• Ensemble classifications are now formally defined, so a compliant vest may not be enough where full-body coverage is required.
• Lower-body visibility is now included for trousers and coverall legs under Class N and Class D/N.
• Fluorescent yellow and yellow-green materials now face tighter luminance requirements.
• 2011-labelled garments are not automatically obsolete, but new procurement should reference AS 4602.1:2024 and clearly state the required class, level and garment configuration.

If your site supervisor, safety consultant, or procurement team has flagged that your current hi-vis stock may no longer meet specifications, you are not alone. AS 4602.1:2024 is the most significant update to Australia’s high-visibility garment standard since 2011, and many businesses are still working through what it means.

The 2024 revision does more than adjust technical requirements. It changes how garments are classified, introduces new risk-based levels, and formally includes lower-body visibility and ensemble requirements for the first time.

For WHS managers, safety officers, and procurement teams, understanding these changes is essential to getting garment specifications right.

This post explains what changed, what it means for garment selection, and what to do if you are still using 2011-labelled stock.

What Actually Changed in AS 4602.1:2024

AS 4602.1:2024 replaces the amended AS/NZS 4602.1:2011 framework with a clearer, risk-based system.

It introduces new Levels 1, 2, and 3 for Class N and Class D/N garments. It also adds lower-body and ensemble requirements, tighter rules for fluorescent yellow materials, and updated design guidance for women’s fit. 

These changes are important; they affect garment design, tender specifications, and how compliance is assessed during site audits.

From Simple Classes to Risk Levels: What the New Structure Looks Like

Before 2024, the system was simple. Class D covered day use with fluorescent background material. Class N covered night use with retroreflective material. Class D/N combined both for workers exposed to daylight and night-time vehicle movement.

That framework remains. The key change is the new level system within Class N and Class D/N. Garments are now classified not only by lighting conditions but also by the risk level of the work environment.

The practical implication is significant. Previously, specifying Class D/N was usually enough. Under AS 4602.1:2024, you also need to specify the level.

Level 3 requires more retroreflective material and more precise placement than Level 1. This means a garment designed for one level will not automatically meet another. 

How to Work Out Which Level Applies to Your Site

The three levels are based on vehicle movement, speed, and risk exposure at the work location. 

Level 1: Lower-risk sites

Use where vehicle exposure is low, site speeds are controlled, and workers are clearly separated from moving vehicles. 

Examples include internal yards, warehouse loading areas, and controlled industrial sites. 

Level 2: Standard site risk

The baseline for most construction, road work, and industrial environments where workers are regularly near moving plant or vehicles.

Level 2 is usually the starting point for construction sites or roadside maintenance crews.

Level 3: Higher-risk sites

Used in high-speed or complex environments where driver reaction time is reduced.

Examples include motorway work, high-speed road maintenance, and multi-vehicle operations.

A site-specific risk assessment and current regulator guidance should always guide the final decision. These levels only provide a starting point, not a replacement for formal assessment.

Torso vs Ensemble: Why the Vest Alone May No Longer Be Enough

A torso garment covers the upper body. A compliant vest, shirt, or jacket may meet Class D/N upper-body requirements, but under AS 4602.1:2024, that may not be enough.

The 2024 standard formally defines ensemble classifications, including Class N-E and Class D/N-E. These assess the combined visibility of upper and lower garments, not the torso alone.

If a site policy or tender requires ensemble coverage, a compliant vest on its own will not meet the requirement. Lower-body garments must also be included.

This is a common procurement risk. Before specifying hi-vis PPE, confirm whether the requirement is torso-only or ensemble-rated, then document it clearly.

Lower-Body Requirements and the Biomotion Principle

AS 4602.1:2024 formally brings lower-body visibility into Australia’s hi-vis standard. Trousers and the lower sections of coveralls now have defined requirements under Class N and Class D/N, closing a gap in the 2011 framework.

This change is based on biomotion. Retroreflective tape on moving limbs, such as legs, helps drivers and equipment operators recognise a person faster than a static torso panel alone. A vest reflects light, but a vest combined with reflective knee or ankle tape shows human movement from a greater distance.

For workers on foot near traffic or moving plant, especially at night, lower-body visibility can be critical. Where lower-body visibility is required, garment specifications should confirm the applicable class, level, tape placement, and supporting compliance documentation before purchase or production. 

Fluorescent Material Updates: What Changed for Yellow and Green

AS 4602.1:2024 tightened the luminance factor requirements for fluorescent yellow and fluorescent yellow-green background materials.

What “luminance factor” mean

Luminance factor measures how much light a fabric reflects compared to a perfect white reflector.

In simple terms, it affects how bright and visible the fabric appears in daylight. Under the 2024 standard, compliant fluorescent materials must now meet a higher performance threshold than under the 2011 framework.

What this means for procurement

A garment label confirms the garment class. It does not always confirm that the fluorescent material meets current luminance requirements.

When sourcing new hi-vis garments, ask your supplier for:

• Current material certification
• Garment classification details
• Evidence that the fabric meets the 2024 luminance requirements

Garment classification and material performance are separate requirements. Both matter.

Link to AS/NZS 1906.4:2023

This update aligns with AS/NZS 1906.4:2023, the materials standard for fluorescent fabrics and retroreflective tapes.

That standard also introduced:

• Recognised fluorescent pink and fluorescent green background colours
• New material classes, including NF(W) for non-fluorescent wet-weather fabrics
• Updated testing requirements for UV resistance, wash durability, and abrasion

When specifying retroreflective tape, check that the selected material is supported by current certification for UV resistance, wash durability, and abrasion performance. 

Women’s Fit Diagrams and What They Mean for Compliance

AS 4602.1:2024 now includes garment design diagrams for women-specific fits. This is a practical update with direct compliance impact.

Why it matters

Hi-vis compliance depends on correct retroreflective tape placement, continuity, and minimum coverage.

Designs based only on a male torso shape may not translate correctly to women’s garments. If the tape layout does not match the garment shape, the finished product may fall short of compliance, even when the intent was to meet the standard.

What procurement teams should check

For mixed-gender workforces, garment designs should be reviewed against the 2024 diagrams, not older design patterns.

For women-specific garments, designs should be checked against the current diagrams to confirm tape placement, continuity, and minimum coverage before production. 

What to Do If You Have Garments Labelled to the 2011 Standard

Garments labelled to AS/NZS 4602.1:2011 are not automatically non-compliant.

Whether they are still accepted depends on your site policy, contract requirements, regulator guidance, and tender specifications. The 2024 standard did not make all 2011-labelled garments obsolete overnight.

How to audit your current stock

1. Check the garment label: Confirm the standard version and class printed on the label.
2. Check your current site policy: If the policy still references AS/NZS 4602.1:2011, 2011-labelled garments may still be accepted on that site.
3. Review contracts and tenders: Newer contracts and tenders, especially from 2025 onward, may reference AS 4602.1:2024. Confirm which version applies.
4. Check regulator or industry guidance: Some sectors may have transition guidance or updated PPE requirements.
5. Flag garments for replacement where needed: If your site policy or contract now requires AS 4602.1:2024, 2011-labelled stock should be prioritised for review or replacement.

For new procurement

From 2025 onward, PPE specifications should clearly state:

• The required standard: AS 4602.1:2024
• The garment class
• The required level, where applicable
• Whether torso-only or ensemble-rated garments are required

The Bottom Line for Hi-Vis Compliance 

AS 4602.1:2024 is a significant update to Australia’s hi-vis garment standard.

It introduces risk-based levels, formal ensemble requirements, lower-body visibility rules, and higher expectations for fluorescent material performance.

For anyone specifying, purchasing, or auditing hi-vis workwear, the key is clarity: know the required class, level, and garment configuration before ordering or approving stock.

If your garment stock, tender wording, or PPE specifications need review, Reflective Fabrications can assist with compliance documentation, Melbourne-based manufacturing, and garments produced to the required site specification.