Abstract:

By introducing the concept of group clustering degree in the group dynamics theory,some formulas arededuced to calculate the clustering degree at adjacent intersections.Then,by controlling the subarea border andsetting the constraint conditions for subarea division,a layered substep strategy of subarea division for traffic controlis developed and a subarea division model based on the group dynamics theory is established.Moreover,the completeacquiring process of optimal subarea division is presented,and the subarea division schemes are comprehensivelyanalyzed and evaluated with the intersection group clustering algorithm.Example results indicate that the proposeddivision method of coordinated control subareas based on the group dynamics theory is effective because it decreasesthe total number of vehicle stops as well as the stop delay in road networks.

Key words: traffic control, subarea division, group dynamics, clustering degree, group clustering algorithm