Intersection traffic state identification method based on PSO-ELM algorithm
A technology of traffic status and intersections, applied in traffic control systems of road vehicles, traffic flow detection, traffic control systems, etc., can solve problems such as no contribution to results and slow training speed
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[0105] Select the measured data of two adjacent adjacent to a region in Beijing, including the intersection queue length, segment saturation, and time share. A total of 16 directions of the two intersections (not considering the effect of the right turn flow) are statistically statistically. Every 5 minutes, one time period is 15 minutes, collects 9 time sections, so collects 432 (15 / 5 * 16 * 9) strips for one time. In order to make the clustering results more in line with the actual, and select data acquisition for 4 different working days in the same week, 1728 (432 * 4) sample data were obtained. Data forms are shown in Table 1:
[0106] Table 1
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[0109] According to the "Urban Road Traffic Congestion Evaluation Index System" proposed by the Beijing Traffic Development Research Center, the state of the intersection in the above data is divided into 4 grades, which are smooth, mild congestion, moderate congestion, severe congestion. The num...
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