| 2.1. | Test of the weather-resistance of the luminance factor and of the colour of the fluorescent (advance warning triangle of type 1) and fluorescent retro-reflecting (advance warning triangle of type 2) materials. | a0c0 |
| 2.1. | Test of the weather-resistance of the luminance factor and of the colour of the fluorescent (advance warning triangle of type 1) and fluorescent retro-reflecting (advance warning triangle of type 2) materials. | a0c0 |