نتایج جستجو برای: traffic congestion
تعداد نتایج: 114773 فیلتر نتایج به سال:
Demand-Responsive Transport Services (DRTS) are an attempt to improve the efficiency of public transport when demand is sporadic. The DRT service simulator that we have developed analyses most of the random events, such as traffic congestion and the arrival time of passengers at their pickup points, which ultimately affect the quality of the service. We assume that vehicles are moving within th...
Because of rapidly rising network traffic, ISP providers are trying to create new network structures and extend more resources to control the growth of demands. It is important to efficiently split the network bandwidth among different sources so that each user has enough bandwidth. Traffic engineering is used to achieve this goal. Performing reliable and efficient network ope...
This paper addresses the problem of congestion control for transmission control protocol (TCP) traffic in the Internet. The method proposed builds on the ideas of TCP Vegas, a true feedback control approach to congestion management of TCP traffic. The new method is based on an adaptive linear quadratic Gaussian (LQG) formulation which uses an extended least squares system identification algorit...
Traffic management and congestion control are key issues in ATM networks. Congestion control schemes promises effective traffic management and it uses feedback information from the network to specify the maximum rate at which each source can transmit cells in to the network. In this paper, we considered an Explicit Forward Congestion Indication (EFCI) Congestion scheme, developed by ATM forum f...
This paper proposes the use of congestion pricing for achieving relative service differentiation in satellite IP networks. The idea is to use congestion pricing as an effective approach to control traffic rate for Transmission Control Protocol (TCP) flows, with Explicit Congestion Notification as a congestion feedback mechanism, by taking into account network users’ willingness-to-pay. With mul...
Congestion Control performs a very important role in Computer Networks, Modern Telecommunication, Internet and both wired and wireless communications are being intended for high-speed communication of large amounts of data. Due to lack of proper Congestion control mechanism the congestion collapse of such networks would become highly complex. A network with Streamed media traffic is a challenge...
It is estimated that 76% of commuters are driving to work alone while each of them experiences a 38-hour delay annually due to traffic congestion. Ridesharing is an efficient way to utilize the unused capacity and help with congestion reduction, and it has recently become more and more popular due to new communication technologies. Understanding the complex relations between ridesharing and tra...
The Problem Urban areas face increasingly acute vehicular traffic congestion. Current methods for measuring traffic flow on a real-time basis are antiquated and limited in their capacity to assess traffic dynamics. Buried inductive loop detectors at intersections are extensively used in the USA and Europe to measure traffic speed, occupancy and volume on freeways and arterials. The data obtaine...
The Urban Mobility Report (UMR) is a widely-cited study that quantifies and monetizes (measures in monetary units) traffic congestion costs in U.S. metropolitan regions. This report critically examines the UMR's assumptions and methods. The UMR reflects an older planning paradigm which assumes that " transportation " means automobile travel, and so evaluates transport system performance based p...
Cooperative vehicular systems are currently being investigated to design innovative ITS (Intelligent Transportation Systems) solutions for road traffic management and safety. Through the wireless exchange of information between vehicles, and between vehicles and infrastructure nodes, cooperative systems can support novel decentralized strategies for ubiquitous and more cost-attractive traffic m...
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