noise pollution can be considered as the most important problem of urban environmental management in mega metropolises and urban transportation is the main source of the mentioned problem. this study aims to investigate the amount of traffic noise dose received by traffic policemen in tehran; district 1 municipality. the investigation was conducted during three consecutive months in 2007 in 282...

Local vehicle density state estimation is increasingly becoming an important factor of many Vehicular Ad-hoc Networks (VANETs) applications such as traffic state estimation and protocols such as congestion control. This estimation is used to get an estimated number of the neighbors within the transmission range. The periodic sent messages (beacons) are not sufficient to cover transmission range...

As an important parameter to describe the sudden nature of network traffic, Hurst index typically conducts behaviors of both self-similarity and long-range dependence. With the evolution of network traffic over time, more and more data are generated. Hurst index estimation value changes with it, which is strictly consistent with the asymptotic property of long-range dependence. This paper prese...

Grey-markov forecasting model of traffic volume was founded by applying the model of GM (1,1) and Markov random process theory. The model utilizes the advantages of Grey-markov GM (1,1) forecasting model and Markov random process in order to discover the developing and varying tendency of the forecasting data sequences of traffic volume. The analysis of an example indicates that the grey-markov...

Network operators need to know the root cause of traffic anomalies to determine the appropriate action to mitigate their effect. This paper studies the one type of anomaly for which we can know the root cause: routing-induced anomalies. A major challenge in quantifying the effect of routing events on traffic is that the flows affected by routing are not easily distinguishable from the rest of t...

Methods and results Child (aged <15 years) pedestrian death rates (ICD code E814-7) were calculated by using National Health Statistics Centre mortality data for 1967 to 1987. A traffic volume index, based on data from traffic counters on urban highways throughout New Zealand, and the number of registered vehicles were obtained from the Ministry of Transport. There was an annual average of 32 5...

Traffic congestion is a major problem in urban areas that has a significant adverse economic impact through deterioration of mobility, safety and air quality. As a result, the importance of better management of the road network to efficiently utilize existing capacity is increasing. To that end, many urban areas build and operate modern Traffic Management Centers (TMCs), which perform several f...

Local vehicle density estimation is increasingly becoming an essential factor of many vehicular ad-hoc network applications such as congestion control and traffic state estimation. This estimation is used to get an approximate number of neighbors within the transmission range since beacons do not give accurate accuracy about neighborhood. These is due to the special characteristics of VANETs su...