This study aims to determine the suspension characteristics of vehicles that are loaded vertically. Pneumatic cylinders as actuators will be driven by compressed air and directly overload the vehicle's wheels. Deviations that occur during compression in Spring and Shock Absorber are substituted into the vehicle dynamic load equation. Experiments are carried out using pneumatic actuators that replace the real dynamic load of the vehicle. The results show that the magnitude of the displacement when the compression force works is significantly affected by the vertical dynamic load
of the vehicle which weighs on road construction. From the graph shows that the shock absorbers have a greater ability to reduce dynamic loads vertically when compared to spring capabilities. The shock absorber is able to reduce the load by 55.85%, so that the vertical dynamic load of the vehicle, FDvk which loads the road structure is equal to, 16204 N.