Principles and Techniques of Traffic Calming at Intersections with Traffic Lights

There isn't a big city whose intersections aren't controlled by traffic lights. Today, the three lights seem commonplace, but many drivers don't realize that there was a time when traffic lights were changed manually. This scientific paper presents in a concrete and elegant manner a research carried out by the authors with the aim of highlighting how to achieve traffic fluidization of road vehicles at intersections of roads or streets with traffic lightsIn this way, those interested can learn about the types of electric traffic lights used in road traffic, some basic principles regarding the calculation of phases and the traffic light cycle in road or street intersections and three specific examples, presented through case studies on the calculation of the minimum yellow and the dilemma area in traffic lights, on a single traffic phase. The three case studies presented in this scientific paper can be successfully applied in the development and training of students in the specialization of transport and traffic in the faculties of transport and traffic engineering. At the end of the paper, conclusions are drawn and some recommendations and observations from the authors on the field are presented.