The first part of the paper presents the equivalent dynamical model of the forklift system in the most difficult work situations: descending on a slope braking of the vehicle in translational motion and acceleration of the fork while lifting the load. Based on the dynamical model are elaborated the mathematical models describing the dynamical behavior of the forklift truck during moving or working. These models deliver the criteria for the overturning stability. The last section of the paper presents a measurement installation developed for experimental research on the dynamics of the fork lift truck.
