 While most expressways in Japan are four-lane divided expressways with median barriers, some expressways in rural areas are two-lane expressways, such as some sections of the Hokkaidō Expressway.The two-lane expressways in Japan are built in the same manner as the ordinary four-lane expressways with grade-separated interchanges and full access control, allowing future conversions to full four-lane divided expressways.The two-lane expressway is not a new concept in Malaysia, as the Kuala Lumpur–Karak Expressway was initially a two-lane toll expressway before being upgraded to a full expressway in 1997.