Guide signs found along Shin Kizugawa-bashi Bridge between the Joyo Interchange and the Tanabe-kita Interchange are green (signs only for expressways), but no other traffic sign dedicated for expressway use has been installed because this section is not a road designated strictly for motor vehicles.
城陽IC～田辺北ICの新木津川橋は案内道路標識は緑色だが自動車専用道路ではないため自動車専用道路の標識は設置されていない。