Modeling and Optimization of Traffic Flow in Urban Areas - Czech ...

Chapter 6Conclusions6.1 Summary and ContributionsIn this thesis, the modeling and optimization techniques to improve efficiencyof light controlled intersections in urban area have been studied. The generalprocedures to make intersection models were shown as well optimizationtechniques to their control. All results were verified on real data from Praguetraffic region.The extended queue model based on number of vehicles in the queue andthe mean value of waiting time was presented. Further, we have used themodel to derive the parameters of the controllers for a simple intersectionmodel. The advantages and disadvantages of the presented controllers werediscussed.General light controlled intersection model was based on CCPN. The newmethod for conflict resolution in CCPN has been presented. The conflict resolutionmethod is based on the maximal speed proportion. Next, the iterativealgorithm for this problem and its solution by LP was shown. The lightcontrolled intersection model describes the traffic flow from the macroscopicpoint of view. This model is innovative, firstly, by the free space modelingtogether with the opposite direction of the vehicular flow. Secondly, by theconstant speed continuous Petri net uses only.The last part of thesis describes the optimization of traffic flow in urbanregion. The new algorithm for the offset and the split of intersections waspresented. The offset is respecting the green wave strategy and the split is63