Throughout this paper, analysis and development of a coupling system for industrial vehicles can be found. In an introduction to the topic, it was analyzed objectives and advantages of the development of the system. Some previously published studies with similar content or conclusions necessary to the understanding of the system under study are also presented. In order to develop a system more precise than the currently used, the common systems are study in this paper, focusing on 4 wheeled trailers, varying the coupling system rotation center, it can be in the front vehicle or in the rear vehicle. In the commonly used systems the trailers tend to get to close from the rotation center, this means that both trailer have lower trajectory lines, having not ideal precision. Having studied the systems used in shop floor nowadays, a new coupling system is developed with the aim of increasing trailers' trajectory precision. Are study two different systems. The first one is to control the trailers steering mechanism, in order to position the trailer in the better position, and the other system is simply altering the coupling system length and rotation centers. By analyzing the results the system solution with the rotation of the rear axle of each trailer guarantees better precision, where the trailers perform a trajectory precision of 100%. But the solution that better fits the industrial reality is the solution with the alteration of the length and the rotation center of the coupling system. This solution allows less precision but its better in price, cost and implementation effort.