What Is the Reflective Coefficient Standard StVZO TA-Nr.16a?
StVZO TA-Nr.16a is a German regulatory requirement under the Straßenverkehrs-Zulassungs-Ordnung (StVZO), which governs road traffic and vehicle equipment.
TA-Nr.16a specifically defines:
1. Minimum Reflective Coefficient Requirements
It outlines the exact retroreflective performance values that reflective materials must meet when used on vehicles, safety devices, and warning markings in Germany. Typical requirements include:
Defined brightness levels under controlled observation angles
Consistent reflectivity across different colors (red, white, yellow, etc.)
Minimum long-term durability against weathering
2. Color & Appearance Requirements
The standard ensures that reflective colors (especially red/white chevrons, safety markings, and hazard panels) meet strict chromaticity coordinates to remain visible under nighttime illumination.
3. Application Compliance
Materials approved under StVZO TA-Nr.16a are typically used for:
Vehicle hazard warning markings
Construction machinery
Safety barriers
Traffic safety equipment
Reflective hazard panels
4. Certification Requirement
Products must undergo German certification testing to receive approval confirming they meet the TA-Nr.16a reflectivity values.
These tests measure:
RA (Coefficient of Retroreflection)
Color stability
UV resistance
Weathering endurance
Why This Standard Matters
If your reflective tape or marking complies with StVZO TA-Nr.16a, it means:
It is approved for the German and often broader EU market.
It provides reliable nighttime visibility, essential for road safety equipment.
It meets one of the strictest reflectivity benchmarks in Europe.
