⋅lux -1 (젖은 조건), 172 mcd⋅m -2 ⋅lux -1 (비오는 조건)으로 우수한 성능을 나타내었다. Abstract Several attempts to design the best-available thermosetting road markings by using MMA to improve the durability and retrore- flectivity are presented in this paper. In order to improve field applicability, the components of main materials were designed by means of reducing the hardening time lower than eight minutes. The optimum mixing ratio of thermosetting road marking was TSRM-6 composed of 15.6 wt% of MMA monomer (Tg = 105 ℃), 6.0 wt% of PMMA (MW = 70,000, Tg = 60 ℃) and 1.2 wt% of TMPTA (MW = 338, Tg = 27 ℃). Also the homogeneous mixing of all components was necessary. The use of ceramic glass beads with an optimized TSRM-6 exhibited excellent performance by achieving retroreflectivity coefficients of 431, 354 and 172 mcd⋅m -2 ⋅lux -1 for dry, wet and rainy test condition, respectively at two hundred thousand cycles.