名神高速公路
Japan's expressway development has been financed largely with debt. It was intended to make the expressways free when they are paid off. The Meishin Expressway and Tomei Expressway debt has been fully paid off since 1990. It was decided in 1972 that tolls would be pooled from all expressways to provide a single source of operating funds, since some sections were little used. Earthquake resistant construction methods have added to costs, as well as extensive soundwalling. In March 2009 (then) Prime Minister Taro Aso unveiled a plan to reduce tolls to ¥1,000 on weekends and national holidays. Tolls on weekdays would be cut by around 30 percent. According to the National Expressway Construction Association, 4.41 million vehicles use the expressways daily, driving an average of .