*1: Solid lines indicate sections that are in service and dotted lines indicate sections that are under construction as of April 1 2017. Planned sections (i.e., sections at the planning or exploratory stage) are not noted.
*2: Urban expressways that are already numbered are excluded from this numbering system. Those expressways are indicated with gray lines.
*3: Although some interchange names are omitted from the wide-area maps (large maps of the Yokohama-Shonan area, Nagoya area, and Kinki region), all interchange names appear in the enlarged maps.