The route originates from its junction with the Meishin Expressway and Chūgoku Expressway and extends east shortly, then southward. At its southern terminus it connects to the Nishi-Meihan Expressway and Hanwa Expressway. Tolls are charged at a flat rate (currently 510 yen for a regular passenger car). The speed limit is 60 km/h on the section between Suita Junction and Ibaraki Toll Gate and 80 km/h on all other sections.
History
The first section of the expressway was opened to traffic in 1970 to coincide with the opening of Expo 70 in Osaka. The final section of the expressway (4.8 km between Yao Interchange and Matsubara Junction) was opened on 17 March 1988.