Research On Control Strategy Of Signal Intersection Dilemma Zone

Dilemma zone is in the intersection place can’t pass through the area also can’t stop, once the vehicle is in a dilemma, there will be neither dock safety before the stop line nor smoothly pass the intersection, the phenomenon increases the probability of collision and running red lights of vehicles at intersections, reduces the road intersection traffic safety ability and pass efficiency.In this paper, through the analysis of control method of mathematical model based on static dilemma zone in solving the problems of the actual dilemma zone, establish dynamic mathematical model of dilemma zone, three kinds of dynamic dilemma zone length under different conditions, analysis the relationship among dynamic dilemma zone, speed, maximum velocity, maximum acceleration, the reaction time and the time of yellow light.According to the analysis of the dilemma zone traffic flow and speed, the speed and time of yellow light dilemma zone setting time of yellow light dilemma zone of fuzzy rules, put forward dynamic dilemma zone of yellow light time fuzzy control strategy, establish a yellow light time FIS editor, use the yellow light time rule table and response table, fuzzy control on the yellow light time dilemma zone.Combined with dynamic dilemma zone model and dynamic dilemma zone yellow light time fuzzy control strategy, establish dynamic dilemma zone overall control strategy. According to the general control strategy of dynamic dilemma zone, using intelligent transportation and vehicle road collaborative technology, build dynamic dilemma zone on-board warning and yellow light timing control system.Finally, through different road intersection traffic investigation table, set vehicle category, speed add, subtract speed of traffic VISSIM simulation network, and according to the intersection fixed light response phase diagram, change timing table and fuzzy control table of VISSIM signal in road network, conduct fuzzy control simulation in vehicle through a yellow light and yellow light time the intersection of fixed timing, the probability of the former in the dilemma is far less than the latter in the dilemma.