ADR or Daewoo Diesel Railcar ( English : Daewoo Diesel Railcar ) is an air-conditioned diesel rail car of the State Railway of Thailand. Used for making passenger trains. and diesel express trains Ordered from Daewoo Heavy Industries Company, South Korea, since 1995 - 1996 to support the increasing demand of passengers. It is popular to travel by air-conditioned trains. Daewoo diesel rail cars were also used to carry tourists during the SEA Games and Asian Games between 1995 and 1998, held in Thailand at that time.