dc.contributor.author | Zhang, J | |
dc.contributor.author | Qu, X | |
dc.date.accessioned | 2018-02-12T02:42:31Z | |
dc.date.available | 2018-02-12T02:42:31Z | |
dc.date.issued | 2015 | |
dc.identifier.uri | http://hdl.handle.net/10072/369187 | |
dc.description.abstract | Speed – density relationship, which is usually referred to as the fundamental diagram, has
been considered as the foundation of the traffic flow theory and transportation engineering. It
has been long believed that single regime models could not well represent all traffic states
ranging from free flow conditions to jam conditions. Qu et al. (2015; Transportation Research
Part B, 73, 91-102) point out that the inaccuracy is not caused solely by their functional forms,
but also by sample selection bias, and then apply a novel calibration approach to address the
sample selection bias problem. In this technical note, we theoretically investigate how the
functional forms of different models cope with the sample selection bias. A novel sampling
approach is used to select uniform observational data (which would have the same
characteristics with experimental data). With the selected uniform data, we can analyse the
impact of functional forms themselves by eliminating the sample selection bias. As most speed
– density models are derived from their corresponding car following models, we can use the
aggregated macroscopic speed density data to evaluate the performance of microscopic car
following models. In this way, we can establish the connection between macroscopic and
microscopic traffic flow models. | |
dc.description.peerreviewed | Yes | |
dc.language | English | |
dc.publisher | Australasian Transport Research Forum (ATRF) | |
dc.publisher.place | Australia | |
dc.publisher.uri | http://atrf.info/papers/2015/index.aspx | |
dc.relation.ispartofconferencename | ATRF 2015 | |
dc.relation.ispartofconferencetitle | ATRF 2015 - Australasian Transport Research Forum 2015, Proceedings | |
dc.relation.ispartofdatefrom | 2015-09-30 | |
dc.relation.ispartofdateto | 2015-10-02 | |
dc.relation.ispartoflocation | Sydney, NSW, Australia | |
dc.subject.fieldofresearch | Transport engineering | |
dc.subject.fieldofresearchcode | 400512 | |
dc.title | Calibrating Fundamental Diagram based on Two Types of Speed-Density Data | |
dc.type | Conference output | |
dc.type.description | E1 - Conferences | |
dc.type.code | E - Conference Publications | |
dc.description.version | Version of Record (VoR) | |
gro.faculty | Griffith Sciences, School of Engineering and Built Environment | |
gro.rights.copyright | © The Author(s) 2015. The attached file is reproduced here in accordance with the copyright policy of the publisher. For information about this conference please refer to the conference’s website or contact the author(s). | |
gro.hasfulltext | Full Text | |
gro.griffith.author | Zhang, Jin | |
gro.griffith.author | Qu, Xiaobo | |