Modelling traffic flow with a time-dependent fundamental diagram
โ Scribed by Tong Li
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 131 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0170-4214
- DOI
- 10.1002/mma.470
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โฆ Synopsis
Abstract
We model traffic flow with a timeโdependent fundamental diagram. A timeโdependent fundamental diagram arises naturally from various factors such as weather conditions, traffic jam or modern traffic congestion managements, etc. The model is derived from a carโfollowing model which takes into account the situation changes over the time elapsed time. It is a system of nonโconcave hyperbolic conservation laws with timeโdependent flux and the sources.
The global existence and uniqueness of the solution to the Cauchy problem is established under the condition that the variation in time of the fundamental diagram is bounded. The zero relaxation limit of the solutions is found to be the unique entropy solution of the equilibrium equation. Copyright ยฉ 2004 John Wiley & Sons, Ltd.
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