Topic
Traffic wave
About: Traffic wave is a research topic. Over the lifetime, 2106 publications have been published within this topic receiving 62117 citations. The topic is also known as: phantom traffic jam & ghost jams.
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23 Apr 2010
TL;DR: This paper will present an IntelliDrive agent-based model of traffic congestion and examine the impact of one vehicle on a system limited to a single traffic lane and propose a solution to reduce traffic congestions and also minimize accidents based on implementing one Intelli drive-equipped vehicle among a certain number of cars in a single-lane circuit.
Abstract: Traffic congestion on highways has increased dramatically in the last two decades. As more and more cars are put on the road each year, traffic congestion is becoming more complex and unpredictable than ever before as people try to avoid it by changing their schedules and routes. IntelliDriveSM is a suite of technologies and applications that use wireless communications to provide connectivity that can deliver transformational safety, mobility, and environmental improvements in surface transportation [11]. This paper will present an IntelliDrive agent-based model of traffic congestion and examine the impact of one vehicle on a system limited to a single traffic lane. The cars interaction is based on IntelliDrive vehicle-to-infrastructure communications. The mean speed of the cars is analyzed and the evolution of traffic congestion is observed with the passage of time. Can a single agent influence the dynamics of traffic flow on a complex network? Furthermore, can an “Intelligent-car” annul the oscillatory behavior (stop and go) resulting from the acceleration and deceleration of the other vehicles? Theoretical results are presented and a solution to reduce traffic congestions and also minimize accidents is also proposed, based on implementing one IntelliDrive-equipped vehicle, among a certain number of cars in a single-lane circuit. The approach that was finally selected and several other schemes that were considered are described.
11 citations
TL;DR: The base of this two-lane model, the Nagel–Schreckenberg model, is investigated to investigate the impact of a place of obstruction, e.g., because of road works, on partial fractions, densities and mean velocities.
Abstract: As the Nagel–Schreckenberg model (NaSch model) became known as a realistic approach to describe traffic flow on single-lane streets, this model was extended to two-lane traffic by several groups. On the base of our two-lane model, we will now investigate the impact of a place of obstruction, e.g., because of road works, on partial fractions, densities and mean velocities.
11 citations
TL;DR: It is shown that the traffic jams can propagate forward with increasing minimal velocity by computer simulation and the simplified model allows the analytical result for the propagation velocity of traffic jams to be given.
Abstract: Traffic jams propagating in the congested traffic flow are investigated by the computer simulation and the analytical method. We study the propagation properties of traffic jams in the dynamical traffic model which is a simplified version of the car following models. It is shown that the traffic jams can propagate forward with increasing minimal velocity by computer simulation. The simplified model allows us to give the analytical result for the propagation velocity of traffic jams. The condition at which the propagation direction of traffic jams changes is analytically found.
11 citations
01 Oct 2004
TL;DR: In this paper, a multi-lane traffic flow model was proposed to capture the disruptive effects of lane-changing vehicles by recognizing their limited ability to accelerate, while they create voids in the traffic stream that affect its character.
Abstract: A multi-lane traffic flow model realistically captures the disruptive effects of lane- changing vehicles by recognizing their limited ability to accelerate. While they accelerate, these vehicles create voids in the traffic stream that affect its character. Bounded acceleration explains two features of freeway traffic streams: the capacity drop of freeway bottlenecks, and the quantitative relation between the discharge rate of moving bottlenecks and bottleneck speed. The model com- bines a multilane kinematic wave module for the traffic stream, with a detailed constrained-motion model to describe the lane-changing maneuvers, and a behavioral demand model to trigger them. The behavioral demand model has only one parameter. It was held constant in all experiments.
11 citations
12 Oct 1993
TL;DR: In this article, a car-following model is proposed, which assumes that a driver reacts to the stimuli from the surrounding traffic by choosing an acceleration or deceleration, which is proportional to two components, i.e., the difference between the preferred time gap and the actual time gap, and the difference in preferred speed and actual speed.
Abstract: The car-following theory offers a mathematical description of how vehicles proceed in a platoon. The changes over time in the speed and acceleration of each vehicle, as a consequence of the speed and acceleration of the vehicles in front, are described. A new car-following model is suggested. The hypotheses is that a driver reacts to the stimuli from the surrounding traffic by choosing an acceleration or deceleration, which is proportional to two components, i.e., the difference between the preferred time gap and the actual time gap, and the difference between the preferred speed and the actual speed.
10 citations