The Simulation Model of Expressway Based on Modified Cell Transmission Model
Guixia Chen, Chong Wei, Yinhu Wang
Abstract
Guixia Chen, Chong Wei, Yinhu Wang
Abstract
In order to realize the reasonable planning, design and management of expressway, the modified cell transmission model is proposed considering the limitation of equal cell length of traditional cell transmission model, improving the mode of traffic transmission on expressway. The capacity and jam density is calculated and the relationship between traffic speed and density is calibrated by using the vehicle detector data. Meanwhile, the traffic speed-density relationship is refined by adopting the weighted least square method, enhancing the practicality of the model. When the modified cell transmission model is applied in the expressway, the mean percentage error of cell traffic flow can be controlled at around 12 percent, which shows that the simulation result is satisfactory.
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In order to realize the reasonable planning, design and management of expressway, the modified cell transmission model is proposed considering the limitation of equal cell length of traditional cell transmission model, improving the mode of traffic transmission on expressway. The capacity and jam density is calculated and the relationship between traffic speed and density is calibrated by using the vehicle detector data. Meanwhile, the traffic speed-density relationship is refined by adopting the weighted least square method, enhancing the practicality of the model. When the modified cell transmission model is applied in the expressway, the mean percentage error of cell traffic flow can be controlled at around 12 percent, which shows that the simulation result is satisfactory.
Key concepts: Cell Transmission Model, Transmission (telecommunications), Mode (computer interface), Computer science, Traffic flow (computer networking), Simulation, Traffic model, Telecommunications