A fire truck comprises an uninterrupted chassis frame carrying a driver's cab and supported on four driving axles arranged in 8x8 configuration and driven independently. The driving axles support the chassis frame via pressure fluid springs at opposite sides of the vehicle, the forward and rearward pairs of axles and associated springs defining forward and rearward undercarriages and the chassis carrying quenching agent tanks, a quenching agent pump, and a driving engine. The fluid pressure springs at one side of the vehicle are connected via a pressure fluid supply system and a load compensator system to the springs at the opposite side. An automatic transmission is positioned between the forward and rearward undercarriages and the driving axles are individually coupled thereto. The automatic transmission is coupled to the driving engine which is situated in the chassis frame above the rear undercarriage.
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