Combined Certification and System Solutions
Combined certification allows for the combination of different high visibility garments to achieve higher protection classes. CE marking and approvals are governed by regulations that ensure that combined systems truly maintain the safety level.
How Combined Certification Works
Combined certification means that different high visibility garments are tested and approved as a whole, not just individually. All components must be evaluated together.
The certification body checks how reflective materials, colors, and placement work together when the garments are used simultaneously. This is to ensure that the total visibility does not decrease just because different garments are combined.
Key factors in the combined certification process:
- Total area of reflective and background material.
- The effect of color combinations on visibility.
- How practical it is to use the garment combinations.
- That everything complies with the EN ISO 20471 standard.
Combining Different Garments for Higher Protection Class
By combining class 1 and class 2 garments, you can actually achieve a class 3 certification if you wear them together. A class 2 vest with class 1 trousers is a classic example that often works to reach class 3.
Tranemo (and other brands) have specific combination tables that show which garments are actually approved to combine. It is a bit tricky, but the tables specify exactly which garments can be paired for the correct protection level.
| Garment Type |
Class |
Combination Possibility |
| High Visibility Vest |
2 |
+ Class 1 Trousers = Class 3 |
| High Visibility Jacket |
2 |
+ Class 1 Trousers = Class 3 |
| High Visibility Trousers |
1 |
+ Class 2 Top = Class 3 |
Approval and CE Marking of CE Garments
All high visibility garments sold within the EU must be CE marked – this is the basic requirement. The marking indicates that the garment meets safety requirements and contains information about the protection class, washing instructions, and usage area.
If you use combined certified combinations, they receive special markings that indicate exactly which garments are included. It is important to wear only those garments specified in the certification; otherwise, the protection class does not apply.
Contents of the CE Marking:
- Manufacturer's identification
- Protection class according to EN ISO 20471
- Washing instructions and durability
- Combination instructions for combined certified systems
Practical Guidelines for High Visibility Certification in 2025
New work environment regulations and changed rules mean that the certification processes for high visibility clothing need to be updated. Material choices must follow the EN ISO 20471 standard, and many pitfalls can be avoided with the right documentation.
Material Choices and Design Requirements
Reflective materials must meet retroreflection requirements according to EN ISO 20471. For class 3, at least 0.20 m² of reflective tape and 0.50 m² of fluorescent background material are needed.
The fabric's color intensity must hold up after at least 25 washes at 60°C. Approved colors? Yes, they are:
- Fluorescent Orange (4003)
- Fluorescent Yellow (4005)
- Fluorescent Red (4002)
Tape placement is quite strict – horizontal bands should be at least 50 mm from the garment edge. Vertical bands should run from the shoulder to the waist without interruption.
Seams and attachment points are tested for tensile strength. Reflective materials must withstand at least 25 N. Material combinations are tested separately to ensure that everything holds together.
Common Mistakes in Certification
Incorrect documentation is the biggest culprit behind certification rejections. Test reports must show exact measurements for retroreflection, color, and material.
Many overlook how washing instructions affect certification. If the garment allows dry cleaning or bleaching, it can actually disqualify the entire process.
Insufficient marking is also common. CE marking, class designation, and washing instructions must be placed correctly and be legible after 50 washes.
Prototype deviations often cause issues. Small changes in seams or materials sometimes require re-certification – this is easy to miss.
Testing labs report that incorrect sampling from batches yields uneven results. Samples must truly represent the entire production, not just the best-looking examples.
Important Dates and Planning
The application process usually takes 8-12 weeks from start to approved certification. Do you want to launch in the summer? Then it’s high time to start in February.
Testing laboratories are often fully booked during February-April – that’s when most submit their applications. If you book after Easter, you can expect an additional 3-4 weeks of waiting.
Production stoppages during the summer also affect the timeline. Many testing labs have low staffing during weeks 26-32, so everything takes longer.
New work environment regulations are being rolled out gradually in 2025 and the final transition occurs in December. Existing certificates remain valid, but new applications will follow the new rules starting in March.
Year-end is always stressful – many want to get certifications completed before the financial closing. Applications in December can easily slip into January 2026, especially considering all the holidays.