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Many routing algorithms for vehicular ad-hoc networks have relied on geographic forwarding as a means to reduce the paths' sensitivity to individual vehicle movements. In recent years, the basic forwarding strategies have been refined to create road-based paths, connecting successive road intersections selected on the basis of the connectivity between them. Revisiting this idea, we present two different...
In vehicular ad hoc network (VANET), vehicles are connected in a self-organized manner to collect and share various traffic data about the road condition, accidents, traffic congestions, and other related events, This data can be used to improve the driving quality, however VANET vehicles may receive unreliable data broadcasted by malicious vehicles which may result in unsafe driving and accidents...
Road networks are the most important facility to the public transportation in modern cities. Governments around the world allocate large amounts of budgets for the pavement maintenance every year. In this paper, we proposed a crowdsourcing solution to categorize road anomalies into safety related anomalies such as speed bumps and rumble strips, and dangerous anomalies such as bumps and potholes. The...
Because both drivers and passengers may have different time constraints and preferences for carpooling, it is hard to manually find the best carpooling match, i.e., the lowest fuel-cost route, between them in the traditional carpooling web site. With the help of real-time traffic information exchanged among nearby vehicles through the vehicular ad-hoc network (VANET), this paper proposes the dynamic...
Traffic congestion control is pivotal for intelligent transportation systems. Previous works optimize vehicle speed for different objectives such as minimizing fuel consumption and minimizing travel time. However, they overlook the possible congestion generation in the future (e.g., in 5mins), which may degrade the performance of achieving the objectives. In this paper, we propose a vehicle Trajectory...
Cloud-based vehicular networks is a new paradigm to improve the vehicular services through distributing computation tasks between remote clouds and local vehicular terminals. To further reduce the latency and the transmission cost of the computation offloading, we propose a cloud-based Mobile Edge Computing (MEC) offloading framework in vehicular networks. In the framework, efficient computation offloading...
Treating roads in winter (snow removal for example) is an important service that facilitates people's movement and increases the pavement's life. However, these treatments can be very expensive and inefficient if they are not properly scheduled. For this purpose, a complete view of the pavement's state is often essential for the management and the effectiveness of such treatments.
We implement a collision prevention system, called pSafety, which instantaneously informs pedestrians and drivers of the potential threatening accidents. Unlike other systems, pSafety alerts pedestrians of threatening vehicles coming from not only the line-of-sight, but also non-line-of-sight due to obstructions of the wall corner or other vehicles. pSafety collects GPS information from smartphones...
Road surface conditions can cause serious traffic accidents, often with tragic consequences. Thus, an efficient system for mapping road anomalies can significantly promote the safety of drivers and pedestrians. This paper proposes a novel road anomaly mapping system that is able to detect a wide variety of conditions with high accuracy. The smartphone's accelerometer and GPS sensors are used for detection...
In this paper, we introduce an estimation of communication range using Wi-Fi for V2X communication environment. Traffic accidents and traffic hazard are serious social problems. Understanding road condition in advance is important and necessary to prevent traffic accidents and traffic hazards. In addition, getting information without Internet connection is necessary to provide road information for...
Traffic Level of Service (LOS) information is crucial for traffic management systems, especially in urban areas. One method to estimate traffic LoS is to use a central server system to process traffic images captured by road side cameras. However, this approach requires a high performance server system as well as high network throughput to transmit images from the cameras to the server, which results...
The need to improve road traffic management is evident worldwide. Growing congestions on the roads along with a gradual increase of pollution and concern for improving traffic safety have prompted to explore the potential of the Intelligent Transportation Systems through numerous research projects funded by public entities and/or the automotive industry. However, due to various reasons, including...
Participatory sensing (PS) is an emerging socio-technological paradigm in which citizens voluntarily participate and contribute to a distributed information system using applications installed in their hand-held devices. It can be found in a number of real-life applications, viz. traffic monitoring, air/sound pollution, garbage monitoring, social networking, commodity pricing, and so on. In these...
The raising concerns of energy consumption and air pollution advance the development of electric vehicle technologies and promote the increased deployment of Electric Vehicles (EVs) towards electric transportation. The increasing number of EVs on the road network leads to a growing challenge of electricity management for the power grid to promptly supply electricity to EVs. In order to address this...
With digital maps of the transport network and realtime traffic updates, today's navigation services provide good quality routes in the major route level. Once entering the last mile near the destination, they unfortunately can be ineffective and, instead, local drivers often have a better understanding of the routes there. Given the deep penetration of 3G/4G mobile networks, drivers are now well...
In VANET the first and foremost requirement for a vehicle is that it should have the freedom to move around from one network region covered by a particular access point to another. Since the vehicle can move around in the system but the Infrastructure is immobile, it becomes mandatory to perform a handover procedure from the previous access point to another so that the vehicle can maintain a continuous...
In Vehicular Ad-hoc Networks (VANETs), any vehicle uses a location service to get an up-to-date data of all vehicles' positions in its vicinity. Many location services rely on infrastructures to perform location update and location query tasks. However, the infrastructure penetration rate may differ from one region to another. We propose in this paper a new location service called Vehicle-Aided Location...
With the constant increase in vehicular traffic, existing traffic management solutions have become inefficient. Urbanization has led to an increase in traffic jams and accidents in major cities. In order to accommodate the growing needs of transport systems today, there is a need for an Intelligent Transport System. Vehicular Adhoc Network (VANET) is a growing technology that assists in Intelligent...
In recent years, interest in Vehicular Ad Hoc Networks (VANETs) research has increased dramatically. This paper investigates the network performance for information dissemination for advertising applications in VANETs. To take on challenges of using broadcasting scheme to disseminate messages at intersection, this paper proposes an Intersection-based Handover (IHO) protocol to increase the message...
The vehicular networks represent an innovative and a promising research area. They contribute in the realization of ITS (intelligent transportation systems) to improve road safety and to provide various services and applications for both drivers and passengers. Several applications require knowledge of vehicle's positions such as target tracking. In a previous work, an approach for tracking exploiting...
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