The section between the Kumiyamayodo Interchange and the Oyamazaki Junction/Interchange is a national expressway on which a minimum speed limit is enforced; consequently, small and compact vehicles are prohibited.
なお、久御山淀IC～大山崎JCT/ICの区間は高速自動車国道なので最低速度が適用され、小特などの通行は不可能である。