Vehicular ad hoc network (VANETs) allows vehicles to communicate to each other and to roadside units. This enables a lot of different applications which can bring safety, efficiency, convenience and other benefit to users and the traffic system. Therefore, it received huge attention from academic area, government and manufactory. This paper focus on the security issues of the system. We are goi...

We propose a dissemination system using multiple roadside units (RSUs) on a two-way roadway. To enhance the performance of data services, data items are disseminated through a hybrid of infrastructure-to-vehicle (I2V) and vehicle-to-vehicle (V2V) communications. Unserved requests in RSU’s coverage are transferred to the next RSU located in a vehicle’s trajectory. In this way, channels are utili...

background: the main objective of this study was to determine the respiratory health symptoms and lung function among roadside hawkers in serdang, malaysia and its association with traffic-related exposures. methods: this cross-sectional comparative study was conducted among 60 roadside hawkers while 60 restaurant workers were included as the comparative group in 2015. a questionnaire was used ...

In vehicular ad hoc networks, roadside units (RSUs) placement has been proposed to improve the the overall network performance in many ITS applications. This paper addresses the budget constrained and delay-bounded placement problem (BCDP) for roadside units in vehicular ad hoc networks. There are two types of RSUs: cable connected RSU (c-RSU) and wireless RSU (w-RSU). c-RSUs are interconnected...

VANET is a type of ad hoc network in which the moving vehicles act as nodes. There has been lot of research for using VANETs in many applications. One of the main applications is the use of VANETs to improve driving safety. In any safety related applications, the vehicular nodes have to constantly communicate with each other and the roadside equipments. For e.g., the roadside units sense real t...

Now–a–days Vehicular Ad Hoc Networks (VANETs) has attracted the attention of both the industry and academia. Roadside units (RSUs) are one of the fundamental components of Vehicular ad hoc network (VANET). VANET comprises of moving vehicles communicating with each other. During the initial stages of VANET, it is not possible to deploy more and more number of RSUs; it is so because of the lack o...

Effective file transfer is fundamental to many applications in highway Vehicular Ad Hoc Networks (VANETs), e.g., social network applications, advertisement distributions, road traffic report, etc. However, due to the sparse development of roadside units (or access points) and the limited connection time between fast-moving vehicles, file transfer is susceptible to frequent interruptions, and ac...

     Roads have an important role in plants dispersal on different scales. Various plant species settle on roadsides, but some of them can enter the natural environments and threaten their biodiversity. Worldwide knowledge of roadside flora is necessary for local and global management of natural areas. Accordingly, the roadside flora of Northern Khorasan rangelands was studied along the 600 km ...

Industrial activities and high traffic density are the most important heavy metal pollution sources in urban areas. Roadside dust created by atmospheric deposition can be one of the best indicators for heavy metal contamination levels. The present study reports the spatial distribution patterns and degree of heavy metal pollution (Cd, Cr, Ni, Pb, Zn, and As) in 50 roadside dust samples from urb...