Research Article

Subdivision of Urban Traffic Area Based on the Combination of Static Zoning and Dynamic Zoning

Table 6

Traffic flow density standard deviation before and after dynamic partition.

Time periodCore intersectionStateStandard deviation of section traffic flow densityNumber of intersections

7 : 30Road network before partition5.4840
9Road network after partition: Subarea 13.5317
14Road network after partition: Subarea 27.314
31Road network after partition: Subarea 32.119
Average standard deviation of traffic flow density after partition in road network3.5740
Optimization rate (percentage of decrease in standard deviation)34.85%40

7 : 40Road network before partition5.5640
9Road network after partition: Subarea 13.5917
14Road network after partition: Subarea 26.075
31Road network after partition: Subarea 32.4218
Average standard deviation of traffic flow density after partition in road network4.5540
Optimization rate (percentage of decrease in standard deviation)18.17%40

7 : 50Road network before partition4.7840
9Road network after partition: Subarea 13.0517
14Road network after partition: Subarea 25.425
31Road network after partition: Subarea 32.4418
Average standard deviation of traffic flow density after partition in road network3.0540
Optimization rate (percentage of decrease in standard deviation)36.19%40

8 : 00Road network before partition5.0540
16Road network after partition: Subarea 12.7918
14Road network after partition: Subarea 26.034
31Road network after partition: Subarea 32.5818
Average standard deviation of traffic flow density after partition in road network3.1840
Optimization rate (percentage of decrease in standard deviation)37.03%40