Details

Autor(en) / Beteiligte

• Sofer, Tal
• Polus, Abishai
• Bekhor, Shlomo

Titel

Properties of Dynamic Freeway Network Flexibility Model

Ist Teil von

• Transportation research record, 2014-01, Vol.2466 (1), p.98-104

Ort / Verlag

Los Angeles, CA: SAGE Publications

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The objective of this study was to investigate the properties of the flexibility model in a network of freeways that conveys high volumes of traffic. A dynamic system flexibility model is defined, and its three major components are evaluated and discussed. The dynamic system flexibility model measures and estimates the options of drivers traveling between origin–destination pairs in a freeway network. The three models’ components depend on the number of possible and feasible routes between a given origin–destination pair, on the common lengths of the possible routes, and on the amount of variability between the length of each route and the length of the shortest route. The lengths of the link in the model are perceived lengths and depend on the occurrence of congestion in them. The flexibility measure provides a good estimate of the number of options available to drivers in a given network. Moreover, this measure is sensitive to the amount of congestion in the freeway system, and therefore the model that is proposed is flow dependent. Although the common lengths between the routes increase, the flexibility decreases. A pseudoparadox, similar to the Braess paradox, is shown to exist under certain network conditions.