 In 1953 DAB started collaborating with Leyland Motors of Great Britain and as a result DAB used Leyland components for many of its buses, commonly building bodies on Leyland chassis, although they still bodied buses on different chassis as needs arose.In the 1970s Leyland bought a majority stake in DAB and renamed the factory Leyland-DAB, DAB also built buses on Leyland underframes, some for import into the UK, such as the Leyland-DAB Lion and Guy Arab.From 1964, DAB built a standardized bus, mainly for Copenhagen.