道(dao)(dao)路交通(tong)(tong)標志是顯示交通(tong)(tong)法(fa)規(gui)及(ji)道(dao)(dao)路信息的圖形(xing)符號,它可使(shi)交通(tong)(tong)法(fa)規(gui)得到形(xing)象、具體、簡(jian)明的表達,同時還表達了難(nan)以用文字(zi)描述的內容,用以管(guan)理交通(tong)(tong)、指示行車方向以保證(zheng)道(dao)(dao)路暢(chang)通(tong)(tong)與(yu)行車安全的設施。適用于公(gong)路、城(cheng)市(shi)道(dao)(dao)路以及(ji)一切專用公(gong)路。