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This article focuses on the study of non binary Petri nets, its components, ability to model discrete event systems and especially the feasibility and limitations for its programming by using programmable logic controllers (PLCs). A comparison between binary Petri nets and non-binary is made, finding primarily 2 differences: the number of tokens in the states and the weight of the arcs that affect the evolution of the marking. Thus, a method for implementing non-binary on this language is proposed. This methodology is applied to control traffic systems, taking into account the number of vehicles that wait for 2-way cross, to change the time in green and red in every stoplight and optimize the traffic on the intersection. At the end, the results of the obtained simulation in Ladder language are presented. [ABSTRACT FROM AUTHOR]

The presence or absence of the necessary road sections with visibility distance passing on a two-lane road, affects the quality of traffic flow as it affects the capacity, the level of service, accident and operating speed. Therefore, it is very important that a two-lane road has sections with passing sight distance, equally important is also the formula that indicates how many running meters are needed to perform the maneuver safely and the procedure to be performed to the geometric design planes to the determine the road sections in which there is this distance. In considering the formulations that calculate this distance, there are many variables, of which it is necessary to emphasize on some variables and let other variables fixed, taking conditions in which there is no influence of these. That is why data were taken from the maneuver in which a car passing another car, how many seconds of data used by drivers to overtake in places where other variables such as the slope of the road are not of great importance, because very small. It also discusses Colombian regulations related to the topic. [ABSTRACT FROM AUTHOR]