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首页> 外文会议>Coat international conference of transportation professionals >Study on the Potential Capacity of a Curb Lane at Ramp Merging Sections of an Interchange
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Study on the Potential Capacity of a Curb Lane at Ramp Merging Sections of an Interchange

机译：立交桥匝道合并段路缘车道的潜在通行能力研究

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Ramp merging sections are regarded as the most common segment of recurrent congestion occurred on expressway as two separate traffic streams join to merge a single stream or lane. To address this issue, the first step is to identify the merging mechanism of vehicles on-ramp is method of alternate passing model. Then a new concept of merging headway and the survey method of the actual merging headway is introduced in this study. Based on the theory of saturation flow rate, merging headway model is proposed to estimate the capacity of the right-most lane. In order to validate the rationality of merging headway model, the Greenshields model, Drake model and Underwood model are applied in this thesis. At last, reduction factor model of the saturation flow rate on the right-most lane under the condition of various factors is put forward, which is mainly based on the geometric factors. The findings from this research demonstrate that the capacity of curb lane at merging section is determined by the ramp merging angle and the length of acceleration lane.
机译：匝道合并路段被视为高速公路上经常发生的经常性拥堵路段，因为两个独立的交通流汇合成一条路或车道。为了解决这个问题，第一步是要确定车辆匝道的合并机制是交替通过模型的方法。然后介绍了合并进度的新概念和实际合并进度的调查方法。基于饱和流量理论，提出了合并车头模型以估计最右边车道的通行能力。为了验证车头合并模型的合理性，本文采用了Greenshields模型，Drake模型和Underwood模型。最后提出了在各种因素条件下最右边车道饱和流量的折减因子模型，该模型主要基于几何因素。这项研究的结果表明，合并路段的路缘通行能力取决于坡道合并角度和加速行车道的长度。

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