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变速车道是互通式立交中,车辆在该区段上实现分流、变速、合流和车道转移,主线车道和匝道之间的一段附加车道,也很容易诱发交通事故。若变速车道设计不当,则会造成行车不适,鉴于互通式立交对周边地区的影响本文从变速车道的形式选择出发,对变速车道的长度计算进行了分析,并对出口匝道进行了设计,研究结果具有一定的工程参考价值。
Variable speed lanes are interchanges in which interchanges, gearshift, merging and lane shifting of vehicles are implemented. An additional lanes between the main lane and the ramp can easily cause traffic accidents as well. If the variable speed lane is not properly designed, it will cause traffic discomfort. Considering the influence of the interchange on the surrounding area, this paper analyzes the length of the variable speed lane based on the selection of the variable speed lane, and designs the exit ramp. Has a certain engineering reference value.