Saitama Prefectural Route 42

Two sign errors occur on this road. First, at the junction with Route 4 and Route 16, the sign indicates the route as "40." The second, occuring on signs from all directions, indicates that from the T intersection just north of the route 26 overpass, route 42 goes in all three directions. Most maps indicate that route 268 (unsigned until Saitama/Ibaraki border) travels east from here, with route 42 only traveling south or west. Traveling west, route 42 loops around to intersect route 26 (after this point becoming a hidden designation), then duplexing it east across the Edogawa River to the Saitama/Chiba border. At the border, route 42 continues as Chiba Prefectural Route 42 (signed only as the higher-priority route 26).

Length
	18,882 m
Route name
	Matsubushi Showa Sekiyado line
Southern terminus
	Matsubushi-machi, route 19, opposite route 21 (with route 80) (Nodabashi intersection)
Northern terminus
	Satte-shi, Saitama/Chiba border (with route 26)
Municipalities traversed (S to N)
	Matsubushi-machi Showa-machi Sugito-machi Satte-shi
Points of interest

Road intersections
	route 19 (with route 80, 2.4 km duplex from 42 terminus), opposite route 21 route 80 (end of duplex) Route 4 Route 16 route 321 route 320 route 183 route 375 route 319 route 383 route 268 route 26 (440 m duplex to Saitama/Chiba border)
Train line intersections
	Tobu Noda line (near Minami-Sakurai Station)
Notes
	Two sign errors occur on this road. First, at the junction with Route 4 and Route 16, the sign indicates the route as "40." The second, occuring on signs from all directions, indicates that from the T intersection just north of the route 26 overpass, route 42 goes in all three directions. Most maps indicate that route 268 (unsigned until Saitama/Ibaraki border) travels east from here, with route 42 only traveling south or west. Traveling west, route 42 loops around to intersect route 26 (after this point becoming a hidden designation), then duplexing it east across the Edogawa River to the Saitama/Chiba border. At the border, route 42 continues as Chiba Prefectural Route 42 (signed only as the higher-priority route 26).