The prime of postal vehicle transportation in interwar Czechoslovakia took place in the 1920s. At the beginning a fleet of the new autonomous republic consisted also of vehicles gained from the stock of the defeated Austro-Hungarian army. Since May 1919, likewise some bus lines from Austro-Hungarian era were put into operation and new ones meeting economic and public needs of the young state originated gradually.  A number of postal vehicles increased and transport routes were prolonged. In 1927, Czechoslovak postal vehicle transportation covered 326 vehicles and 2,650 km of routes, which was approximately ten times more than in 1919. Such a...