Transition from Reflective to Energy-Storing Self-Illumination in Road Markings: A Review

Road markings regulate and direct traffic by conveying specific information. It is of great significance to develop new road marking materials and improve the visibility of marking materials for improving traffic efficiency and ensuring traffic safety. This paper summarized the development status of various reflective road markings at home and abroad. In addition, the energy storage luminescent fluorescent/phosphor marking lines in road marking was emphatically generalized to evaluate the advantages and disadvantages of different improvement methods. Overall, strontium aluminate doped with Eu²⁺ co-doped with Dy³⁺ (SrAl₂O₄:Eu²⁺, Dy³⁺) phosphors and self-luminous pavement for energy storage had great prospects in improving road safety and reducing energy consumption.