道路標線之雙效性能與成本效益分析

Analysis of Road Marking's Dual Performance and Cost-Effectiveness

為了能有效提升道路標線之反光與抗滑性能，本研究以材料配比設計著手，提出具備優異回歸反射、抗滑係數之雙效標線配比。同時根據長期的性能檢測資料，建立性能指標掌握各階段之性能變化，並劃分等級標準供主管機關決策。由指標結果可知雙效標線不僅發揮優異的抗滑性能，亦兼具對照組標線缺乏的反光表現。此外本研究依實際道路情境對於標線之性能需求，設定權重因子評量標線服務績效，得知無論在有無照明、乾燥或多雨之情境下，雙效標線均能展現更佳的服務績效。最終計算標線之成本與使用年限，進行生命週期之成本效益分析，建議標線之材料選擇。經本研究證實雙效標線可作為日後推廣使用，對於改善標線服務水準與強化交通安全有著重要意義。

To enhance the retroreflection and skid resistance of road markings, this study conducted experimental design on the material composition of markings and proposed a dual-performance marking material with long term performance. Based on the periodical inspection data, performance indicators were established to objectively evaluate the condition of markings at various stages and to develop classification standards to support decision-making of roadway authorities. The indicator results reveal that the dual-performance markings not only achieve excellent skid resistance performance, but also demonstrate outstanding retroreflection that is much superior than the conventional marking materials. Considering the real-world road situations, weight factors of lighting and rainfall conditions were applied to assess the overall service performance of markings. The results indicate that, regardless of lighting conditions or whether the environment is dry or rainy, the dual-performance markings consistently offer superior service performance. Finally, by integrating cost calculations and service life evaluations, a life cycle cost-benefit analysis was conducted to provide recommendations for selecting marking materials. This study confirms that dual-performance markings are suitable for broader future application, aiming to improve the quality of road marking services and enhance traffic safety.