In 1938, the Kingdom of Yugoslavia launched a competition to find a truck design that would be license produced in the country.
The competing vehicles had to complete a 8,000 km (5,000 mi) journey across Yugoslav roads of poor quality.
The RN won and in 1938, the Zavodi Aleksandar Ranković (ZAR), ancestor of post WWII Industrija Motora Rakovica (IMR) plant near Belgrade, started to receive parts for assembly, the first Yugoslav manufactured vehicle rolling off the production line in 1940.
Unfortunately, production was cut short by the invasion of Yugoslavia in 1941.

Production resumed in 1947 with the name Pionir, but by 1950 less than 1,200 had been made.
 Production was therefore moved to Tovarna avtomobilov Maribor in Maribor.
17,146 vehicles, known as TAM Pionir, were then produced during the next fifteen years.
The majority were flatbed trucks, but a number of fire engines, buses and other vehicles were also produced.
In 1938, the Kingdom of Yugoslavia launched a competition to find a truck design that would be license produced in the country. The competing vehicles had to complete a 8,000 km (5,000 mi) journey across Yugoslav roads of poor quality. The RN won and in 1938, the Zavodi Aleksandar Ranković (ZAR), ancestor of post WWII Industrija Motora Rakovica (IMR) plant near Belgrade, started to receive parts for assembly, the first Yugoslav manufactured vehicle rolling off the production line in 1940. Unfortunately, production was cut short by the invasion of Yugoslavia in 1941.
Production resumed in 1947 with the name Pionir, but by 1950 less than 1,200 had been made.  Production was therefore moved to Tovarna avtomobilov Maribor in Maribor. 17,146 vehicles, known as TAM Pionir, were then produced during the next fifteen years. The majority were flatbed trucks, but a number of fire engines, buses and other vehicles were also produced.
Praga RN