道路材料光学反射特性，是研发与应用环保凉爽路面、热岛效应缓解、道路照明节能、道路视觉安全增强等技术的关键基础。国际上的城镇化及可持续发展对道路视觉(舒适安全)与环境功能(环保节能)提出了全新挑战，对道路材料光学反射特性的要求，从特殊频率、窄频谱，转向全频谱，从单一功能转向多因素的复合功能。然而，对道路材料全频谱、多功能反射特性，国际上尚未明确揭示其机理和相关影响因素及规律。.本课题将采用定性与定量、试验与模拟相结合的方法，基于路面材料的晶体结构、物理状态与使用环境等因素，揭示路面材料光学反射频谱特性的变化规律，建立统一量化模型，探索路面材料全频谱光学反射特性评价模型，提出基于不同功能的反射频谱优化方法，研制光学反射复合功能路面材料的生产工艺及配方，为环保耐久凉爽路面、节能舒适道路照明、全天候安全道路标识标线等路面材料的功能复合化提供有效的基础技术支撑，促进道路交通的绿色可持续发展。

Reflectance is used widely in roads and pavements for surface transportation, such as road lighting and safety, road signs and pavement markings and safety, reflective cooling in pavement for extended pavement life and heat island mitigation. However, the functional characteristics and optimization evaluation of full-wavelength spectral reflectance of road materials are not fully understood yet. The objectives of this proposed research are to explore the physical mechanisms and classification of the spectral reflectance behavior of road materials, reveal the influencing factors and their impacts on the spectral reflectance behavior of road materials, develop the model for the spectral reflectance behavior of road materials, and investigate the optimization of spectral reflectance behavior for different applications and evaluate the optimized performance. The findings are expected to provide useful insights for reflective cooling pavements, energy-saving road lighting systems, and all-weather and safe road signs and pavement markings and to enhance the sustainability and functionalization of pavement materials.