4.1.4. | The outer surface of retro-reflective devices shall be easy to clean. The surface shall therefore not be rough and any protuberances they may exhibit shall not prevent easy cleaning. | a0c0 |
4.1.4. | The outer surface of retro-reflective devices shall be easy to clean. The surface shall therefore not be rough and any protuberances they may exhibit shall not prevent easy cleaning. | a0c0 |