In the event of an emergency, head of the motorcycle has a split second to decide what to do defensive maneuver. The most common choice is the braking maneuver. Starting motorcycle braking is associated with the selection of additional brake, which uses a driver. It is here to choose to use the front brake, rear or both simultaneously. On the course of the braking process will also influence the type of surface on which the vehicle is moving, the smoothness and atmospheric conditions. Undoubtedly, to obtain high values of deceleration may contribute the appropriate tire pressure, or the load on the motorcycle. The tests conducted here show the influence of different factors on the proper functioning of the braking system and at the same time on the delay of the motorbike. Tests were carried out for sports motorbike.

As a result of the increase in the number of vehicles traveling on Polish roads, the state of security has changed significantly in recent years. The risk of a collision or traffic accident has increased as a result of increased traffic. Police statistics show that one of the participants in the collision are people who are cycling. In court practice, when dealing with cases relating to road accidents involving bicycles, it is often necessary to determine the behavior of the driver at the time before the event occurred. For this purpose, knowledge about the braking distance achieved or the braking time of the bicycle can be useful. The article presents the results of testing the braking process of various types of brake systems and bicycles.

Electric bicycles are becoming more and more popular in Poland. They are a source of recreation and physical activity for people with cardiovascular or motor system diseases. The construction of these vehicles does not differ significantly from the ordinary bicycle, it is distinguished only by the engine and the battery, which help in the process of propulsion. The article describes the current state of development of electric bicycles in the aspect of their use as future-oriented ecological means of transport.