Austro-Daimler » D4 / DF4
Since 1918 Austro-Daimler offered a light fire pumper truck DF4 with a 35 hp engine. The first trucks were sent to fire brigades in 1920. Rosenbauer pump had a capacity of 600 l/min and gave pressure of 15 bar. In addition to this version, the company produced a special fire trucks to extinguish steppe and forest fires. And there was also a version D4 - an air vehicle to extinguish the most difficulty fires.