Method for evaluating macroscopic road network traffic state based on floating car data
A technology of floating car data and traffic status, applied in the field of macro traffic flow, can solve problems such as difficulty in adapting
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[0035] The present invention takes the traffic state during the morning rush hour on working days in Chaoyang District, Beijing as an example to evaluate the traffic state of the road network.
[0036] The implementation steps are as follows:
[0037] (1) Calculate the evaluation index, use formulas (1) and (2), combined with the macro traffic flow theory to solve the evaluation index T of the selected area m The calculated values of, η, C and S are shown in Table 2.
[0038] (2) Construct the evaluation objective function. There are 4 evaluation indicators in the present invention, which are 4-dimensional data, so n=4, so the objective function of the model is constructed as follows:
[0039] F(x)=[f 1 (x), f 2 (x), f 3 (x), f 4 (x)] T
[0040] (3) Construct the index vector. In this case, 20 districts of Chaoyang District are selected as the evaluation area, so u=20, so the index vector is constructed as follows:
[0041] F k =[f 1,k , F 2,k , F 3k , F 4,k ] T k=1, 2,...,20.
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