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On the allocation of city space to multiple transport modes

TitleOn the allocation of city space to multiple transport modes
Publication TypeJournal Article
Year of Publication2010
AuthorsGonzales EJ, Geroliminis N, Cassidy M, Daganzo CF
JournalTransportation Planning and Technology
Start Page643
Date Published12/2010
Keywordscongestion, Macroscopic fundamental diagram, multimodal traffic, San Francisco

This paper analyzes urban multimodal transportation systems in an aggregated way. To describe the aggregate behavior of traffic in cities, use is made of an idea that is now receiving some attention: the macroscopic fundamental diagram (MFD). We demonstrate through simulation how the MFD can be used to monitor and control a real network, in this case a portion of San Francisco, using readily available input data. We then show how different modes interact on the same network and discuss how these interactions might be incorporated into an MFD for multimodal networks. The work unveils two main results: first, it confirms recent results showing that restricting access to a city's congested areas can improve mobility for all travelers, including those who endure the restrictions; and second, that dedicating street space to collective transport modes can improve accessibility for all modes, even those from which space is taken away.