This paper presents a new method for increasing the safety of navigation on inland waterways based on examples of conflict situations of two vessels. Some of the considered parameters of vessels movement given as dependent of undertaken maneuvers are the following: the time during which the two vessel cover different distances, an area in which there is a risk of collision (conflict area), the radius of the conflict area and speed of the two vessels. Conclusions related to safety of inland navigation are made based on prediction of future position, speed and course of the two vessels. Two types of vessels, ie. self-propelled barge and a metal boat are used to form conflict area, calculate output results and to assess validity of the model. We also conducted an analysis of the collision possibility between two vessels crossing each others courses on inland waterway with an aim to timely moments for performing anticollision maneuveres.
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