Keywords: Taiwan road sign Art061.3.png 中華民 遵行標誌遵9:僅准左轉 行 Taiwanese Regulatory Sign R9 Left Turn Only Road File ROC2003-09-24道路交 標誌標線號誌設置規則 pdf 第六十 Article 61 1989-12-15 gov tw PD-ROC-Traffic Signs Mandatory direction road signs in Taiwan Turn left mandatory road signs |