Hong Kong Testing Co., Ltd. provides physical testing of road surface according to
General Specification for Civil Engineering Works (1992 / 2006),
British Standard and
Highway Department Guidance Notes on Road Testing
- Texture depth (sand patch method)
- Surface regularity
- Skid resistance
- Luminance coefficient under defuse illumination (Qd) and retro-reflected luminance (RL) of road markings
- Thickness of road markings