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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: Experimental results show an efficiency boost when single-lane overtaking is allowed, traffic signals are accounted for and every vehicle prefers to avoid high traffic density on a road by taking an alternative route.
Abstract: Summary The number of vehicles on the road (worldwide) is constantly increasing, causing traffic jams and congestion especially in city traffic. Anticipatory vehicle routing techniques have thus far been applied to fairly small networked traffic scenarios and uniform traffic. We note here a number of limitations of these techniques and present a routing strategy on the assumption of a city map that has a large number of nodes and connectivity and where the vehicles possess highly varying speed capabilities. A scenario of operation with such characteristics has not previously been sufficiently studied in the literature. Frequent short-term planning is preferred as compared with infrequent planning of the complete map. Experimental results show an efficiency boost when single-lane overtaking is allowed, traffic signals are accounted for and every vehicle prefers to avoid high traffic density on a road by taking an alternative route. Comparisons with optimistic routing, pessimistic routing and time message channel routing are given. Copyright © 2014 John Wiley & Sons, Ltd.

6 citations

Journal Article
TL;DR: In order to analyze the traffic characteristics and traffic conflicts of one-way closed work zone on dual-way-four-lane expressway, statistical analysis was applied based on traffic investigation and conflict survey and the Erlang distribution model which can describe the distribution of headway was calibrated.
Abstract: In order to analyze the traffic characteristics and traffic conflicts of one-way closed work zone on dual-way-four-lane expressway,statistical analysis was applied based on traffic investigation and conflict survey.Firstly,the queuing traits of vehicles on the upstream buffer area of the work zone were analyzed,and the Erlang distribution model which can describe the distribution of headway was calibrated.Secondly,speed distribution characteristics of all the subsections of the work zone were determined,and the speed limit scale of each subsection was proposed.Then,the types of traffic conflicts were summarized,and the determination of rear-end conflict severity degree based on time-to-collision(TTC),as well as the prediction model of rear-end conflicts based on Negative Binomial distribution,were put forward.Lastly,traffic simulations based on VISSIM were conducted.The results show that the rational length of the upstream buffer area should be between 45-70 m based on the queuing traits,the speed limits of the work zone should be determined according to the traffic volume on it;and when the level of traffic volume is unchanged and the speed limit is higher than 50 km·h-1,the number of traffic conflicts will increase dramatically with the increase of the speed limit.

6 citations

Journal ArticleDOI
TL;DR: A model for calculating right-turn traffic delay is established and an approach to analyzing how much each of the three types of traffic delay contributes to the total delay of the intersection is proposed, based on the application of shift-share analysis (SSA), which has been applied extensively in the field of economics.
Abstract: Intersection traffic delay research has traditionally placed greater emphasis on the study of through and left-turning vehicles than right-turning ones, which often renders existing methods or models inapplicable to intersections with heavy pedestrian and non-motorized traffic. In the meantime, there is also a need for understanding the relations between different types of delay and how they each contribute to the total delay of the entire intersection. In order to address these issues, this paper first examines models that focus on through and left-turn traffic delays, taking into account the presence of heavy mixed traffic flows that are prevalent in developing countries, then establishes a model for calculating right-turn traffic delay and, last, proposes an approach to analyzing how much each of the three types of traffic delay contributes to the total delay of the intersection, based on the application of shift-share analysis (SSA), which has been applied extensively in the field of economics.

6 citations

Proceedings ArticleDOI
19 Dec 2013
TL;DR: A prediction model on the time that a vehicle takes to pass through the location where traffic incident happens by using the GPS position and velocity information is proposed to more clearly understand the characteristics of traffic incident.
Abstract: Understanding the impact of traffic incidents, not only can help decision-makers choose a better strategy, but also provide travel recommendations for travelers. This paper uses real GPS data collected from probe vehicle to analyze the impact of incident in urban traffic network. Queuing length and incident duration are used to evaluate impact level incident. Then, a traffic incident pattern classification method based on queuing length variation is proposed to more clearly understand the characteristics of traffic incident. At last, we propose a prediction model on the time that a vehicle takes to pass through the location where traffic incident happens by using the GPS position and velocity information.

6 citations

01 Jan 1967
TL;DR: This paper deals with the distribution of the distance a vehicle has to travel behind a slower one until an overtaking becomes possible when the other traffic is of a simple kind and the sight varies in a special way along the road.
Abstract: A vehicle traveling on a 2-lane road is able to overtake a slower one only if traffic in the opposite direction is sparse enough and if sight conditions are good enough to allow the driver to pass safely. This paper deals with the distribution of the distance a vehicle has to travel behind a slower one until an overtaking becomes possible when the other traffic is of a simple kind and the sight varies in a special way along the road. A numerical example of the average speed and some empirical results about the sight on actual roads are provided.

6 citations


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