Print Email Facebook Twitter A geometric Brownian motion car-following model Title A geometric Brownian motion car-following model: towards a better understanding of capacity drop Author Yuan, K. (TU Delft Transport and Planning; Georgia Institute of Technology) Lavala, Jorge (Georgia Institute of Technology) Knoop, V.L. (TU Delft Transport and Planning) Jiang, Rui (Beijing Jiaotong University) Hoogendoorn, S.P. (TU Delft Transport and Planning) Department Transport and Planning Date 2018 Abstract Traffic flow downstream of the congestion is generally lower than the pre-queue capacity. This phenomenon is called the capacity drop. Recent empirical observations show a positive relationship between the speed in congestion and the queue discharge rate. Literature indicates that variations in driver behaviors can account for the capacity drop. However, to the best of authors' knowledge, there is no solid understanding of what and how this variation in driver behaviors lead to the capacity drop, especially without lane changing. Hence, this paper fills this gap. We incorporate the empirically observed desired acceleration stochasticity into a car-following model. The extended parsimonious car-following model shows different capacity drop magnitudes in different traffic situations, consistent with empirical observations. All results indicate that the stochasticity of desired accelerations is a significant reason for the capacity drop. The new insights can be used to develop and test new measures in traffic control. Subject Traffic flowcapacity dropcar-following modelintra-driver variation To reference this document use: http://resolver.tudelft.nl/uuid:1f5d65dc-0729-48f4-b1a3-c9ed3e25e494 DOI https://doi.org/10.1080/21680566.2018.1518169 Embargo date 2019-03-21 ISSN 2168-0566 Source Transportmetrica B: Transport Dynamics, 7 (2019) (1) Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2018 K. Yuan, Jorge Lavala, V.L. Knoop, Rui Jiang, S.P. Hoogendoorn Files PDF A_geometric_Brownian_moti ... y_drop.pdf 2.72 MB Close viewer /islandora/object/uuid:1f5d65dc-0729-48f4-b1a3-c9ed3e25e494/datastream/OBJ/view