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Traffic safety is critical to our lives. In recent years, the increasing traffic accidents have brought considerable deaths. Reducing the rate of car accident has become one of the most important tasks in transportation field. VANET is a widely used platform contributing to possible solutions. In the past, there are protocols to generate or broadcast warning messages after vehicle collision. However,...
This paper considers the fair access problem in vehicular ad hoc networks (VANETs) and develops an analytical model for analyzing the performance of an IEEE 802.11 DCF based fair channel access protocol in a non-saturated state. We derive the relationship between the transmission probability and the minimum contention window size of a vehicle, and the relationship between the velocity and the minimum...
This paper deals with the application of the concept of Lyapunov exponents in vehicle lateral stability analysis. The constructive nature of the available methods for calculating Lyapunov exponents as the ‘invariant’ measure of the dynamics is the main advantage of this concept. The vehicle model has two degrees of freedom (2-DOF), and its non-linearity is caused by the third-order polynomial expression...
Vehicle rollover may occur due to the yaw instability. Hence, the yaw stability analysis can help improve vehicle safety. In this paper, Lyapunov's direct method is applied to the lateral stability analysis of the non-linear vehicle model driven in a straight-line with constant longitudinal velocity, where the non-linearity of the model comes from the non-linear expression of the lateral tire forces...
In this paper, we review the state of the field on measurements, models, and analysis for the vehicle-to-vehicle (V2V) channel. We first provide a survey of existing work on V2V models, including analytical and empirical models, and note main features and findings. Remaining work to be done in V2V modeling is then described, beginning with the logical next steps, then addressing less obvious areas...
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