Study on the length of composite interchange weaving area of super multi-lane expressway

In recent years, super multi-lane expressways such as two-way ten lanes and twelve lanes have become a new trend of highway reconstruction and expansion in our country. Due to the limitations of terrain conditions, land use scale and investment in expressway reconstruction and expansion, some adjacent interchange is set as compound interchange because of the small net distance between them. In this paper, the combination of adjacent interchange with auxiliary lanes is taken as the research scenario, and by combining theory and simulation analysis, the length selection method of the weaving area of the composite interchange of super multi-lane expressway (one-way five-lane and six-lane) is proposed, which can provide reference for related engineering design practice.