Extended speed gradient model for traffic flow on two-lane freeways |
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Authors: | Tang Chang-Fu Jiang Rui and Wu Qing-Song |
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Institution: | School of Engineering Science, University of Science and Technology of China, Hefei 23006, China |
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Abstract: | In this paper, the speed gradient (SG) model is extended to describe
the traffic flow on two-lane freeways. Terms related to lane change
are added into the continuity equations and velocity dynamic
equations. The empirically observed two-lane phenomena, such as lane
usage inversion and lane change rate versus density, are reproduced
by extended SG model. The local cluster effect is also investigated
by numerical simulations. |
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Keywords: | two-lane traffic speed gradient model lane usage inversion |
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