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dc.contributor.author
Ambühl, Lukas
dc.contributor.author
Loder, Allister
dc.contributor.author
Menendez, Monica
dc.contributor.author
Axhausen, Kay W.
dc.date.accessioned
2019-03-28T12:33:29Z
dc.date.available
2017-06-29T11:53:13Z
dc.date.available
2017-06-29T13:16:11Z
dc.date.available
2018-03-14T09:34:36Z
dc.date.available
2018-03-14T09:36:58Z
dc.date.available
2018-03-21T12:51:35Z
dc.date.available
2019-03-28T12:33:29Z
dc.date.issued
2017-01
dc.identifier.uri
http://hdl.handle.net/20.500.11850/167171
dc.identifier.doi
10.3929/ethz-b-000167171
dc.description.abstract
The macroscopic fundamental diagram, relating average flows and densities in an urban network, has been analyzed in some empirical studies and many simulations. It has been shown to be an efficient tool for traffic management and control or the estimation of travel times in a network. However, empirical studies remain scarce and are usually based on one single data source, such as loop detector data (LDD) or floating car data (FCD). In this paper, we analyze an extensive data set based on both, LDD and FCD for the city of Zurich. We show that each source exhibits a well-defined and reproducible MFD. However, they differ from each other, due to limitations of the data sources. We identify a placement bias, and a link selection bias for LDD, which leads to an overestimation of occupancy or density values, respectively. In order to mitigate such biases we develop a methodology accounting for the relative position of a loop detector on links and their frequency at that position. Moreover, we investigate and validate common practices when transforming LDD occupancy and FCD flows, which are the space effective mean length of a vehicle and the probe penetration rate, respectively. We also apply a combination of LDD flows and FCD speeds to estimate the MFD, which partly eliminates key drawbacks of both data sources.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Transportation Research Board
en_US
dc.rights.uri
http://rightsstatements.org/page/InC-NC/1.0/
dc.title
Empirical Macroscopic Fundamental Diagrams
en_US
dc.type
Conference Paper
dc.rights.license
In Copyright - Non-Commercial Use Permitted
ethz.title.subtitle
New insights from loop detector and floating car data
en_US
ethz.book.title
TRB 96th Annual Meeting Compendium of Papers
en_US
ethz.pages.start
17-03331
en_US
ethz.size
21 p.
en_US
ethz.version.deposit
acceptedVersion
en_US
ethz.event
96th Annual Meeting of the Transportation Research Board (TRB 2017)
en_US
ethz.event.location
Washington, DC, USA
en_US
ethz.event.date
January 8-12, 2017
en_US
ethz.publication.place
Washington, DC
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02610 - Inst. f. Verkehrspl. u. Transportsyst. / Inst. Transport Planning and Systems::03521 - Axhausen, Kay W. / Axhausen, Kay W.
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02610 - Inst. f. Verkehrspl. u. Transportsyst. / Inst. Transport Planning and Systems::08686 - Gruppe Strassenverkehrstechnik
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02100 - Dep. Architektur / Dep. of Architecture::02655 - Netzwerk Stadt und Landschaft D-ARCH::02226 - NSL - Netzwerk Stadt und Landschaft / NSL - Network City and Landscape
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02100 - Dep. Architektur / Dep. of Architecture::02655 - Netzwerk Stadt und Landschaft D-ARCH
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02610 - Inst. f. Verkehrspl. u. Transportsyst. / Inst. Transport Planning and Systems::03521 - Axhausen, Kay W. / Axhausen, Kay W.
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02610 - Inst. f. Verkehrspl. u. Transportsyst. / Inst. Transport Planning and Systems::08686 - Gruppe Strassenverkehrstechnik
en_US
ethz.relation.isVariantFormOf
10.3929/ethz-b-000118755
ethz.date.deposited
2017-06-29T11:53:14Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-06-29T13:16:16Z
ethz.rosetta.lastUpdated
2021-02-15T04:09:38Z
ethz.rosetta.versionExported
true
ethz.COinS
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