A Path Flow Estimation Method for Signal Control Road Network Based on Sampling Vehicle Trajectory Data
A vehicle trajectory and flow technology, which is applied to the traffic control system of road vehicles, traffic flow detection, traffic control system, etc. Increase in rate and coverage, reduce complexity, and wide-ranging effects
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[0097] The present invention verifies the path traffic estimation method through the following simulation cases, such as figure 2 As shown, the simulation model is built on the background of the "four vertical and three horizontal" road network in Shinan District, Qingdao, using VISSIM software. There are 25 intersections in the road network, of which 18 are signal-controlled intersections (circled in the figure). shown), 190 flow directions, a total of 28 OD points in the whole network, and a total of 311 paths to be estimated. The simulation model is calibrated in the morning peak period (7:00-9:00) of the timing plan in March 2019, and the detection data from March 1st to March 12th, 2019 is selected for statistics, according to the average The traffic flow level of the simulation model is calibrated with the vehicle input. The simulation duration is set to 9000s, of which the first 1800s is used as the warm-up period, and the remaining 7200s is used as the verification p...
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