The 4-Poster is a state of the art trailer and vehicle simulator. It consists of 4 floor-mounted hydraulic cylinders with wheel fixtures. The vehicle is on the cylinders, and is displaced vertically to oscillate.
With the help of the 4-Poster you can test charges and service life of vehicles and vehicle attachments under real conditions. Both the automotive industry and manufactures of agricultural implements have based on these tests a lot of data to optimize prototypes and thus to ensure longevity, quality and safety of their vehicles.