Fig 1.
Control area divisions of an intersection.
(a) Example of control area at unsignalized intersections (b) Control area divisions of an intersection. Photos by Shu Zhang, Processed by Shu Zhang. Fig 1(a) is similar but not identical to the original image and is therefore for illustrative purposes only.
Fig 2.
Control area divisions of an intersection.
Fig 3.
(a) Go straight with entrance B; (b) Go straight with entrance C; (c) Go straight with entrance D; (d) Turn left with entrance B; (e) Turn left with entrance C; (f) Turn left with entrance D.
Fig 4.
(a) Distance Analysis of straight conflict point; (b) Distance Analysis of left-turn conflict point.
Table 1.
List of most important variables.
Fig 5.
(a) Simplified schematic diagram of straight-through conflict; (b) Velocity analysis.
Fig 6.
(a) Simplified schematic diagram of turning-left conflict; (b) Velocity analysis.
Fig 7.
Present situation of intersection of Fenglin road and Rongqiao road.
(The figure is similar but not identical to the original image and is therefore for illustrative purposes only).
Table 2.
The of intersection of Fenglin road and Rongqiao road.
Fig 8.
Visual studio calls VISSIM to compile the simulation result graph.
Fig 9.
Simulation flow chart of control strategy for unsignalized intersection.
Fig 10.
(a) Simulation of unsignalized intersection; (b) Simulate reality signalized intersection.
Table 3.
Comparison of simulation results.
Table 4.
Simulation parameter table.
Fig 11.
(a) Comparison of travel time at En; (b) Comparison of travel time at Ee; (c) Comparison of travel time at Es; (d) Comparison of travel time at Ew.