The public bicycle system offers bike rental services intended for shorter relationships. The system consists of bicycles and networks of terminals on which bikes can be left, so that bikes can be taken or rented at one terminal and returned to the other. The use of this system can be free of charge or at a very reasonable price in a shorter period of time (15-30 minutes). This system is very fast, economical and flexible, it also contributes to greater sustainable mobility, reduces traffic jams, increases intermodal traffic, and increases the quality of lifeof citizens with cleaner air and reduced noise. The system of public bikes has existed for almost half a century now, but thanks to advanced technology in the past few years public bikes have succeeded in imposing themselves as a picture of traffic culture that is present in a large number of cities.