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Study on the Collector-distributor Road in the Interchanges on Freeway

Author: DingHuaLei
Tutor: YangShaoWei
School: Chang'an University
Course: Road and Railway Engineering
Keywords: Highway Interchanges Distributed lane Weaving area Traffic Conflict
CLC: U491.22
Type: Master's thesis
Year: 2011
Downloads: 82
Quote: 2
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Abstract


Interchange forms an essential part of the highway. Interchange is important motorway hubs and nodes, and plays an important role in the operation of the vehicle on the highway. Distributed lane interchange alfalfa leaf, cotyledon type. What connection forms between the two ring-shaped ramp, its turning traffic how to adapt to how long distances are problems to be solved. Between when the distance is too long, it will cause the the interchange expansion of the scale, so that the cost to improve. If the distance is too short, the traffic excessive negative on traffic safety, especially for high-speed vehicles on the highway, in terms of traffic accidents probability rises. At the same time, the selection of the interchange is very important in case conditions allow, try to avoid using a form of this may be detrimental to traffic safety. Therefore, the presence of vehicles interwoven running cloverleaf Distributed lane setting and distribution lane study of the number of lanes to improve traffic safety is necessary. Paper distribution lane influencing factors, including interleaving length, traffic volume, traffic signs, and ramp and mainline connection; indicators that can not be quantified, given the language description; Other conditions the theoretical calculation of the weaving area method. The Settings To propose distributing lane comprehensive consideration of various factors. For additional lane weaving area, \maximum turning length accommodate traffic, set this as a distribution lane conditions also apply this method to draw the lane of two-lane distribution set conditions; conditions set according to the calculation lane the use of VISIIM traffic simulation software to simulate and analyze, weaving area traffic running conflict, the Statistical vehicles, select the appropriate evaluation of traffic safety evaluation, and then verify the correctness of the calculated distribution lane set conditions. Interchange area vehicle interwoven running traffic problems, the thesis provides a strong theoretical guidance and reference, set conditions to provide a basis for distribution lane, and distribution lane interchange within the existing specification The provisions of a technical update provides methods and ideas, providing designers with a convenient, has a certain practical significance.

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CLC: > Transportation > Road transport > Technical management of traffic engineering and road transport > Traffic engineering and traffic management > Transport system > Transportation Road
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