The goal of the research project is to create software that maximizes the coincidences of vehicles and simplifies the work of the operators. The optimization will be applied to all transport so that each "trip" of the vehicle results in as many connections as possible. The difficulty of the optimization process is given by the large number of constraints that persist and by the information that is known by the operators, thanks to their experience, but is neither calculated nor memorized. The analysis with BMPN aims to formalize this knowledge.