Carey, M, Balijepalli, C and Watling, D (2013) Extending the Cell Transmission Model to Multiple Lanes and Lane-Changing. Networks and Spatial Economics. 1 - 29. ISSN 1566-113X
Abstract
Macroscopic or flow-based dynamic traffic assignment (DTA) models normally treat traffic in each direction on a roadway as a single lane and, since they do not consider multiple lanes, they can not consider lane-changing behaviour. To investigate how the results may be affected by explicitly considering lanes and lane changing, we consider a road link that consists of two adjacent homogeneous lanes. We assume that traffic entering each lane already knows in which lane it wishes to exit at the end of the link, whether it wishes to exit in the same lane or in the other lane. We model the traffic flows in each lane using a cell transmission model but adapt it to allow for traffic moving from cells in one lane to cells in the other lane. The CTM is used because it handles the modelling of queues and their spillback in an intuitive and widely accepted manner, and our extensions of it allow congestion in one lane to spill back into adjacent lanes. In particular, we investigate how lane-changing and congestion are affected by varying the assumptions concerning two key behavioural parameters, namely the locations at which drivers wish to change lanes and the vehicle spacing needed for lane changing (gap acceptance) as compared to the spacing needed when staying in the same lane (car following). We conclude that there are many situations where modelling a link as a single lane will give a poor approximation to the underlying multi-lane behaviour, or be unable to capture issues of interest, and for those situations multi-lane modelling is appropriate.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2013, Springer Verlag. This is an author produced version of a paper published in Networks and Spatial Economics. Uploaded in accordance with the publisher's self-archiving policy. The final publication is available at link.springer.com |
Keywords: | Cell transmission model; Multiple lanes; Lane changing; Road traffic congestion; Spillback; Dynamic traffic assignment |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > Institute for Transport Studies (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 16 Jan 2014 10:35 |
Last Modified: | 15 Sep 2014 02:29 |
Published Version: | http://dx.doi.org/10.1007/s11067-013-9193-7 |
Status: | Published |
Publisher: | Springer Verlag |
Identification Number: | 10.1007/s11067-013-9193-7 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:77315 |