Traffic Sign Production Materials

1. All highway traffic sign boards should be made of reflective film or other retroreflective materials that comply with the requirements of the current "Reflective Film for Highway Traffic Signs" (GB/T 18833).
2. When reflective film materials are used for traffic sign boards, first- and second-level reflective films should be used on expressways and first-class highways, third- and fourth-level reflective films should be used for traffic signs on second- and third-class highways, and fourth-class reflective films should be used for fourth-class highways. , five-level reflective film.
3. For suspended traffic signs such as masts and cantilevers, reflective films with a higher grade than roadside traffic signs should be used.
4. When uniformity is ensured and conditions permit, lighting or light-emitting diodes can be used to increase the visual recognition of important signs.