A Modified Highway Interchange Design for Improved Land Use and Transportation Efficiency: Case Study of the Guangzhou-Shenzhen Superhighway Guangdong, China

摘要

As the first privately-built toll road in China, the 122.8 km Guangzhou-Shenzhen (GS) Superhighway pioneered many new concepts. From the highway design perspective, the most significant is a modified highway interchange design to allow for the incorporation of nearly 600,000 sq. ft. of commercial/retail space under each of the highway's interchanges. By adding the collection of tolls, bus transfer stations and the land use and local traffic impacts of creating "new towns" about every 7 km, designing these interchanges for flow, access and safety was a major challenge. However, successful execution of the concept should result in improved land use and transportation efficiency in the long run-and thus, a more financially-viable project. This paper describes the factors leading up to the decision to build these new interchanges, the basic design of the typical GS interchange and some of the issues raised.