Reconstruction Plan of Small-Spacing Interchange Connection Sections on Expressway : A Case Study of Xinlong‒Gangkou Interchange on Zhongshan‒Jiangmen Expressway

Authors

JIE Qiang, Guangdong Communication Planning & Design Institute Group Co .,Ltd., Guangzhou , Guangdong 510440 , ChinaFollow
FU Xinsha, School of Civil Engineering & Transportation , South China University of Technology , Guangzhou , Guangdong 510640 , China

Abstract

The plan design for the small-spacing interchange connection on the expressway directly affects operational efficiency and driving safety.To achieve the conversion of traffic flow between different expressways,this study explored the reconstruction plan of the connection section under the condition that the interchange spacing did not meet the Design Specification for Highway Alignment (JTG D20‒2017 ) and investigated two connection schemes,including auxiliary lane and collector-distributor lane by taking the Xinlong –Gangkou interchange of the Zhongshan‒Jiangmen Expressway reconstruction and expansion project as an example.The results show that the auxiliary lane is recommended in consideration of the long-term service level,speed coordination,operational efficiency,and engineering scale.The study can provide reference and inspiration for the determination of reconstruction plans for small-spacing interchanges on similar expressways.

Publication Date

6-23-2025

DOI

10.14048/j.issn.1671-2579.2025.03.025

First Page

208

Last Page

214

Submission Date

August 2025

Recommended Citation

Qiang, JIE and Xinsha, FU (2025) "Reconstruction Plan of Small-Spacing Interchange Connection Sections on Expressway : A Case Study of Xinlong‒Gangkou Interchange on Zhongshan‒Jiangmen Expressway," Journal of China & Foreign Highway: Vol. 45: Iss. 3, Article 25.
DOI: 10.14048/j.issn.1671-2579.2025.03.025
Available at: https://zwgl1980.csust.edu.cn/journal/vol45/iss3/25

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