Abstract
This paper proposes a macroscopic model to describe the dynamics of intelligent traffic flow where intelligent vehicles are driving closer to each other than manual vehicles and operating in a form of many platoons each of which contains several vehicles. The model is developed from a car-following model which allows us to obtain well tractable macroscopic equations for such platoon-based traffic operation. A linear stability diagram is constructed from the developed model based on the linear stability method for a certain model parameter set. It is found analytically that platoon-based driving behaviour of intelligent vehicles enhances the stabilisation of traffic flow with respect to a small perturbation. Numerical simulation of an open freeway with an on-ramp bottleneck supports our analytical results.We have argued that the newly developed macroscopic model will provide a better insight into the dynamics of intelligent traffic flow.
Original language | English |
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Pages (from-to) | 153-169 |
Number of pages | 17 |
Journal | Transportmetrica B: Transport Dynamics |
Volume | 1 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2013 |
Externally published | Yes |
Keywords
- Generalised force model
- Intelligent vehicles
- Linear instabilities
- Macroscopic traffic model
- Platoon operation