Extended Fundamental Diagrams. Issue 4 (April 2020)

• Record Type: Journal Article
• Authors: Wagner, Peter; Nippold, Ronald; Grötsch, Johannes
• Is Part Of: Transportation research record. Volume 2674:Issue 4(2020)
• Page Start: 292
• Page End: 299
• Publication Date: 2020-04
• Subjects: Transportation -- Periodicals; Roads; Transport -- Périodiques; Routes -- Périodiques; Routes -- Conception et construction -- Périodiques; Roads; Transportation; 388.05
• DOI: 10.1177/0361198120912235
• Languages: English
• ISSNs: 0361-1981

Abstract

By using a large data-base of single vehicle data from a German freeway, the fundamental diagram (FD) can be extended. These types of data allow extraction of additional information that can be displayed as a function of the traffic flowQ and speedV . This is demonstrated here with a surrogate measure of safety (SMoS) and two other indices, which can be used to perform more in-depth analyses of traffic flow. In the case of the SMoS, it is possible to identify more and less dangerous regions in the extended FD.