發(fā)布時(shí)間：2018-05-10 17:08

  本文選題：高速公路 + 可變限速模型��； 參考：《福州大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年02期

【摘要】：針對(duì)METANET基本模型在預(yù)測(cè)交通擁堵路段時(shí)誤差較大的缺陷,對(duì)車速和流量模型進(jìn)行修正.提出高速公路可變限速修正模型并確定了可變限速閾值和變化頻率;應(yīng)用仿真對(duì)模型進(jìn)行校準(zhǔn)、驗(yàn)證和應(yīng)用效果分析.仿真結(jié)果顯示,修正模型的應(yīng)用可降低交通總運(yùn)行時(shí)間28.6%~33.2%,提高通過總車公里數(shù)1.8%~3.0%,提高通過總交通量2.00%~3.27%,證明了修正模型的適應(yīng)性和有效性.可變限速變化閾值取10 km·h-1及變化頻率取5 min時(shí)的組合效果最佳,可降低交通事故率50%.
[Abstract]:Aiming at the defects of METANET basic model in predicting traffic congestion, the speed and flow models are modified. A modified model of variable speed limit for freeway is put forward, and the threshold and frequency of variable speed limit are determined, and the model is calibrated by simulation, verified and the effect of application is analyzed. The simulation results show that the application of the modified model can reduce the total running time of the traffic by 28.6and 33.2and increase the number of kilometers through the total vehicle by 1.8and 3.0. the total traffic volume of 2.00 and 3.27 can be increased, which proves the adaptability and effectiveness of the modified model. When the variable speed limit threshold is 10 km h ~ (-1) and the change frequency is 5 min, the combination effect is the best, and the traffic accident rate can be reduced by 50%.
【作者單位】： 福州大學(xué)土木工程學(xué)院;
【基金】：福建省自然科學(xué)基金資助項(xiàng)目(2016J01230)
【分類號(hào)】：U491.4
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本文編號(hào)：1870150