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This article presents an Android application for safety driving based on OsmAnd, an open source platform offering offline maps and navigation. Our application extends OsmAnd to achieved smart navigation features by creating a network of vehicles. These features allow informing regular vehicles about incoming emergency vehicles, which include ambulances, police cars and fire brigades. The goal is to...
Vehicles are increasingly equipped with sensors for safety applications. Sharing information among vehicles can further improve the safety of the overall transportation environment. Enabling each vehicle to get the “right information at the right time” can be valuable to avoid dangerous situations. Information-Centric Networks (ICN) that use the notion of “named-objects” enable information dissemination...
In recent years, vehicular networks have been drawing special attention because of its significant potential role in future smart city regarding traffic efficiency improvement and road safety. Safety's crucial status in vehicular networks is determined by its direct impact on people's lives. Several security services based on cryptography, PKI and pseudonymous have been standardized in the past few...
Vehicular Ad-hoc Networks (VANETs) using a connected-car technology can support safety-critical applications in Cooperative Intelligent Transportation Systems (C-ITS). While WAVE/DSRC has been investigated by a number of researchers to support VANETs, it may not be easy to distribute WAVE/DSRC in the near future due to several practical obstacles. In this paper, we discuss an alternative to support...
Privacy in Vehicular Ad-hoc NETworks (VANETs) is one of the most important issues to attract users to this new technology. In this paper we propose a novel protocol that allows vehicles using the same application in a VANET to agree on an encryption key to exchange confidential data while preserving the privacy. We do this by combining the Elliptic Curve Integrated Encryption Scheme (ECIES) with ring...
The research of vehicular networks has been studied for many years. In actual life, there are a few implementations of V2X communication system, majority of them are extremely expensive. Most importantly, detailed insight implementation procedure hasn't been provided for researches. In this paper, an efficient V2X communication system based on the IEEE 802.11p/1609.X protocol stack, also known as...
Various vehicular applications are available in VANETs either for safety-related or non-safety-related use. Collision warning and car crash alerts are those of the most important messages that own high priority to be rebroadcast than any non-safety messages. Meanwhile among non-safety messages that employs text, images and streaming packets containing voices and videos, the bandwidth must be distributed...
Advancements in hardware, software, and computing technologies make the design and application of series and diverse kinds of networks deployment in several environments possible. An instance of such networks greeted with the enormous interest in research and industries is the vehicular ad-hoc networks (VANETs). Currently, information dissemination in the practical communication networks is achieved...
Vehicular Ad-hoc networks (VANETs) provide a way for a vehicle to deliver various types of information to users or drivers in other vehicles. Distributing a large amount of information such as multimedia messages in a single control channel makes the control channel easily congested. Transmitting multimedia messages through multi-channel to avoid this congestion becomes a feasible solution. However,...
Vehicular networks are vulnerable to many security threats. One of the security threats is Sybil attack, and traditional security solutions which are based on cryptography and centralized authority are insufficient to protect vehicular network from Sybil attacks. We present a lightweight solution for Sybil attacks based on received signal strength. Our scheme is lightweight enough to be used by independent...
Due to the high costs of deploying and testing VANETs, simulations are required for development and evaluation of new protocols at any layer of WAVE protocol stack. Although there are powerful tools to simulate VANETs and especially the IEEE 802.11p/1609.4 DSRC/WAVE protocols, however, they are not free or not publically available. NS-2 Network Simulator is a free and widely accepted simulator used...
In the Vehicular Ad-hoc Networks (VANETs), because of the high mobility of nodes, the narrow channel and the high density of nodes, making the assignment of channel is very complex. In order to solve this problem, we propose a channel assignment strategy via defining the channel reservation period to reserve channel to reduce conflict of the network, and data can also transmit in the reservation period...
Along with advances in technologies and equipment of vehicles with communication devices, vehicular networks were developed. Various applications are proposed and defined for these networks, and as the number of deaths caused by accidents are increasing, safety applications became the most important one. Dynamicity of the nodes in addition to wireless transmission problem cause challenges for disseminating...
Broadcasting plays vital role in vehicle-to-vehicle communication. However, it must face to challenges such as lack of acknowledgment, no retransmission, hidden terminals and low link quality that leads to unreliable communication because of message loss caused by collisions and poor link conditions. It is especially critical for safety messages in vehicular networks. To make broadcast more reliable,...
Vehicular ad hoc networks (VANETs) leverage communication equipment and infrastructure to improve road safety. These networks, by the rapid change of their topology and their broadcasting dissemination nature, can experience mainly two major problems; (1) the broadcasting storm and (2) network disconnection. In this paper, we focus on safety-related messages and propose a new approach to avoid the...
Autonomous vehicles are important to execute missions without the need to put at risk people's life. To achieve this goal, it is essential that these vehicles are endowed of a collision avoidance system. In this study we discuss the use of received signal strength (RSS) of beacons from a vehicular ad hoc network (VANET) as a way to detect dangerous approaches among autonomous vehicles. We extend this...
The recent advances in wireless communication techniques have made possible for vehicles to download from the roadside communications infrastructure, namely drive-thru Internet. However, due to the fast-motions, harsh and intermittent wireless channels, the download volume of individual vehicles per drive-thru is quite limited as observed in real-world tests. This severely restricts the service quality...
Road safety can be improved a lot with the help of Cooperative Collision Warning System, in which vehicles cooperate with each other for relaying safety messages to avoid accidents. Once a vehicle is in an abnormal status, which may lead to potential accidents, an emergency safety message will be generated and sent out to warn surrounding vehicles. In this paper, we address the routing problem of...
Vehicular communication technologies allowed the establishment of vehicular networks to support Intelligent Transportation Systems fostering the development of applications and services. There is a large number of applications and services possible to be developed for this scenarios but, such development finds some hurdles due to the peculiarities of vehicular network topologies. This document proposes...
We introduce an analytical framework for quantitative safety level evaluation of periodic-based safety applications in vehicular ad hoc networks (VANETs). The framework is based on Markov chain modeling and associates the probability of successful reception of safety messages by the safety application with the safety level which is eventually offered to the passengers. The relationship between distance...
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