Keywords: Taiwan road sign Art030.8.png 中華民 警告標誌警18:岔路 Taiwanese Warning Sign W18 Intersection File ROC2003-09-24道路交 標誌標線號誌設置規則 pdf 第三十 Article 30 1989-12-15 gov tw PD-ROC-Traffic Signs Diagrams of warning road signs of Taiwan Crossroad warning signs in Taiwan |