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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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Journal ArticleDOI
TL;DR: In this article, a novel method for isolated intersection traffic control considering spillover is proposed, which distinguishes itself in three aspects: first, channelized section spillover was explicitly taken into account; second, the phase plans are enumerated, therefore flexibility is assured; and third, phase sequences are optimized as well.
Abstract: Large-scale traffic congestion often develops from local long queue in single intersections, accompanied by spillover. Current traffic control methods neglect the spillover effect, which may be one reason for the low efficiency during peak hours. A novel method for isolated intersection traffic control considering spillover is proposed here. This method distinguishes itself in three aspects: first, channelized section spillover is explicitly taken into account; second, the phase plans are enumerated, therefore flexibility is assured; third, the phase sequences are optimized as well. These features improve the effectiveness of the proposed method. Because of the nature of the established optimization model, the genetic algorithm is used to derive optimal signal settings. Numerical comparisons prove the usefulness of the proposed method.

7 citations

01 Jan 1970

7 citations

Journal ArticleDOI
TL;DR: Schedule planning and a computer process which demonstrates how a given demand schedule can be smoothed down to a given target flow in an optimum way and also give an indication of the schedule-upset penalty involved is described.
Abstract: The application of the theory of queues to air traffic control is discussed, and the importance is noted of random perturbations due to late arrival of aircraft, and how traffic schedules in an airway network can best be adjusted to minimize delays due to congestion on certain routes. The theory of queues is explained and time varying queues are described. The randomness in air traffic systems, the effect of reduction in randomness, and the effect of randomness on the design of air traffic systems are discussed. Schedule planning and a computer process which demonstrates how a given demand schedule can be smoothed down to a given target flow in an optimum way and also give an indication of the schedule-upset penalty involved is described. An irregular schedule traffic fed into a node where there is a single constraint is discussed as well as a more complex air traffic system with many constraints. The optimization of the system and further improvements are also discussed.

7 citations

Journal ArticleDOI
ManWo Ng1
TL;DR: Unlike in previous work in which idealized traffic flow modeling techniques have been used, the proposed model employs the traffic flow theory–based cell transmission model, yielding a more accurate and realistic representation of traffic flow dynamics.
Abstract: Road maintenance is essential to ensure a safe and efficient transportation system. Unfortunately, work zones can give rise to significant delays to road users. In this paper, two major limitations in the current work zone optimization models are addressed. First, we relax the assumption of determinism, and model vehicle arrivals as being stochastic. While previous work has shown that this relaxation is important in the quantification of user delay at work zones, no model exists that explicitly accounts for stochasticity in the optimization of work zones. Second, unlike in previous work in which idealized traffic flow modeling techniques have been used, the proposed model employs the traffic flow theory–based cell transmission model, yielding a more accurate and realistic representation of traffic flow dynamics. The focus in this paper is on two-lane two-way highways. A case study is presented to illustrate the proposed model.

7 citations

Patent
Koji Taguchi1, 康治 田口
28 Apr 2008
TL;DR: In this paper, a traveling controller acquires a traffic state including a vehicle density of a road on which a vehicle travelings, and performs traveling control of the vehicle such that an inter-vehicle distance becomes difficult to be shorten as the vehicle density approaches to a critical density.
Abstract: PROBLEM TO BE SOLVED: To provide a traveling controller and a traveling control method, allowing suppression or avoidance of occurrence of a traffic jam. SOLUTION: This traveling controller acquires a traffic state including a vehicle density of a road on which a vehicle travelings (S16), and performs traveling control of the vehicle such that an inter-vehicle distance becomes difficult to be shorten as the vehicle density of the road approaches to a critical density (S18, S22, S26). Thereby, the inter-vehicle distance is not excessively narrowed even when the vehicle density becomes high to cause the natural traffic jam, and brake operation becomes difficult to propagate to a rearward vehicle even when the brake operation is performed, so that it can be suppressed or avoided that a traffic flow becomes a traffic jam flow. COPYRIGHT: (C)2010,JPO&INPIT

7 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202314
202237
202120
202017
201919
201822