Wireless Mesh networks exploit multi-hop wireless communications between Access Points to replace wired infrastructure. For improving the performance of Quality of Service in face of unreliable wireless medium, an adaptive traffic balancing using traffic distribution algorithm has been proposed. In this paper, an adaptive traffic balancing is described to change the verification rule of the tra...

The most significant issue in 802.11 contention based networks is to prevent collisions and to ensure connection quality. Researchers have shown an increased interest in collision aware back-off algorithms. However, collision aware back-off algorithms are still failed to ensure strict priority for the high priority traffic. Especially in the heavy loading network, a large number of unsuccessful...

Traffic accident is a global threat which causes health and economic casualties all around the world. Due to expansion of transportation systems, congestion can lead spike road accident. Every year thousands people have died due traffic accidents. Various technologies been adopted by modern cities minimize Therefore, ensure people’s safety, concept smart city has introduced. In city, factors li...

The human loss in traffic crashes is tragic. More than six million motor vehicle collisions occur on the Nation’s highways every year, causing approximately 5.2 million injuries and more than 41,000 fatalities, and costing more than $150 billion per year. Approximately three-quarters of these collisions could be prevented if the driver’s attention had not been diverted moments before collision....

A prototype geographic information system (GIS) for the analysis of motor vehicle collisions in Honolulu, Hawaii, is described. An overview of GIS hardware and software is provided along with criteria utilized in the development of the Hawaii system. Mapping and spatial data sources relevant to traffic safety are described and evaluated. The usefulness of Census Bureau Topologically Integrated ...

Efforts have intensified to apply a more evidence-based approach to traffic safety. One such effort is the Highway Safety Manual, which provides typical safety performance functions (SPFs) for common road types. SPFs model the mathematical relationship between frequency of crashes and the most significant causal factors. Unfortunately, the manual provides no SPFs for bicyclists, despite disprop...

In spite of the strategic importance of the national Portuguese road network, there are no recent studies concerned with either the identification of contributory factors to road collisions or collision prediction models (CPMs) for this type of roadway. This study presents an initial contribution to this problem by focusing on the national roads NR-14, NR-101 and NR-206, which are located in Po...

Development of disaggregate models for estimating different property damage collision type frequencies in urban intersections has rarely been studied, particularly in Iran. It seems very little research work being implemented for studying the effect factors on collision type frequency at intersections. The main objective of this paper is to develop suitable statistical models to predict types o...

The ability to perform traffic differentiation is a promising feature of the current Medium Access Control (MAC) in Wireless Local Area Networks (WLANs). The Enhaced Distributed Channel Access (EDCA) MAC protocol for WLANs proposes up to four Access Categories (AC) that can be mapped to different traffic priorities. High priority ACs are allowed to transmit more often than low priority ACs, pro...