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Vehicular Ad-hoc Networks (VANETs) are expected to serve as support to the development of not only safety applications but also information-rich applications that disseminate relevant data to vehicles. Due to the continuous collection, processing, and dissemination of data, one crucial requirement is the efficient use of the available bandwidth. Firstly, the rate of message transmissions must be properly...
Traffic congestion is a very serious problem in large cities. With the number of vehicles increasing rapidly, especially in cities whose economy is booming, the situation is getting even worse. In this paper, by leveraging the techniques of Vehicular Ad hoc Networks (VANETs) we present a dynamic navigation protocol called VAN for individual vehicles to find the shortest-time paths toward their given...
Vehicular ad hoc networks (VANETs) are emerging as a new network environment for intelligent transportation systems (ITS). In many applications envisaged for VANETs, traffic information needs to be disseminated to relevant vehicles during a duration of time. Here we present a model of warning message dissemination in VANETs. The idea in our model is that vehicles on a stretch of roads carry warning...
Distributed traffic information systems apply inter-vehicular ad hoc communication to disseminate road traffic information. The high amount of traffic information carried and flooded along the road network leads to superfluous forwarding, which is usually reduced by using rate- or spatial- adaptivity in the dissemination mechanisms. However, in certain cases due to the lack of context-aware information,...
Thanks to the advances in wireless technologies, mobile vehicular networks are likely to become the most relevant form of mobile ad hoc networks (MANET). Vehicular communication which facilitates the exchange of information between vehicles is the prerequisite not only for extending the access to Internet while on the road, but also to cater for special applications such as of road traffic and travel...
Traffic congestion leads to significant cost in terms of time, money and influence on the environment. To alleviate the effect through situational awareness, various traffic service providers aggregate traffic information using a variety of inputs such as probes, toll collection etc. This aggregated information is fed back to the drivers to achieve congestion avoidance and provide arrival-time estimates...
Vehicular sensor networks (VSNs) are an emerging paradigm in vehicular networks. This new technology uses different kind of sensing devices available in new vehicles, to gather information about the driver's environment (speed, acceleration, temperature, seats occupations, etc.) in order to provide a safer, more efficient and more comfortable driving experience. In this paper, we focus on a particular...
Vehicular networks are the major ingredients of the envisioned intelligent transportation systems (ITS) concept. An important component of ITS which is currently attracting wider research focus is road traffic monitoring. The actual approaches for traffic road monitoring are characterized by longer response times and are also subject to higher processing requirements and possess high deployment costs...
In this paper, we propose new controls for a simple intersection based on new information and communication system for intelligent vehicles. These controls are performed to take into account all vehicle arrivals individually. Hence, we consider that there is no traffic light planned by the city and vehicles negotiate their time of access between them or through an intelligent device embedded in the...
The Dynamic Traffic Information publish platform is a core component of the ITS information service system, which focuses on the function of retrieving ITS data from background servers and delivering them to the registered client terminators. The Intelligent Transportation System data format is characterized by its diversity and the complexity, and the traditional data representation cannot fulfill...
With the significant development of wireless technologies, vehicular ad-hoc network (VANET) has gradually become the killing application for automobile industry. Many VANET systems have been developed in recent years. However, the majority of them have the assumption that all or most vehicles have wireless communication devices installed along with an elaborate road side infrastructure. This assumption...
Transportation information collection and communication plays a key role in intelligent transportation system (ITS). Unfortunately, most conventional ITSs can only detect the vehicle in a fixed position, and their communication cables and power cables elevate the cost of construction and maintenance. Because of the advantages of the wireless sensor network (WSN) such as low power consumption, wireless...
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