Transport in South Korea roads and various classifications below the national level. Almost all freeways are toll highways and most of the expressways are built, maintained and operated by Korea Expressway Corporation (KEC). The freeway network serves most parts of South Korea. Tolls are collected using an electronic toll collection system. KEC also operates service amenities (dining and service facilities) en route. There are also several privately financed toll roads. Nonsan-Cheonan Expressway, Daegu-Busan Expressway, Incheon International Airport Expressway, Seoul-Chuncheon Expressway and parts of the Seoul Ring Expressway are wholly privately funded and operated BOT concessions. Donghae Expressway was built in cooperation between KEC and
Chaebol from the same hanja or kanji), some major differences have evolved between chaebol and keiretsu: The chaebol model is heavily reliant on a complex system of interlocking ownership. The owner of the chaebol, with the help of family members, family-owned charity and senior managers from subsidiaries, has to control only three of four public companies, who themselves control other companies that control subsidiaries. A good example of this practice would be the owner of Doosan, who controlled more than 20 subsidiaries with only a minor participation in about 5 companies. The chairmen in charge of the chaebol possess a small