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The recent research on reliable data dissemination techniques vehicular ad hoc networks (VANETs) motivates for a stable VANET clustering algorithm. However, considering topology dynamics and the high mobility of vehicles, it's not easy to make the network connected in a restricted delay. In this paper, we develop an enhanced clustering algorithm to form stable clusters for delay-bounded applications...
Vehicular Ad-hoc networks (VANETs) are an emerging class of wireless networks for data exchange between vehicles or between vehicles and infrastructure. They attract interest both from the point of view of the automobile industry as operators of networks and services, in order to provide new technologies that improve the safety and efficiency of road transport. Following this vision, we seek in this...
In this paper, we propose a lateral control scheme for autonomous lane keeping system on highways. Three main techniques are proposed, to improve the lane-keeping performance and and to reduce the ripple in the yaw rate on highways. First, we propose a virtual lane prediction method to cope with the momentary failure of lane detection. Second, we innovate an approach to steering wheel angle control...
New era for the smart transportation system has arrived and DSRC/WAVE technology is in the middle of this innovation. This technology can provide a high data rate transmission in a wireless communication especially for a vehicle. In this paper the link budget and throughput for the WAVE system are analyzed in numerical under a highway environment. The analysis is performed for both V2V and V2I cases...
A robust network of distributed sensors has been proposed in response to the Radiation Awareness and Interdiction Network (RAIN) Broad Agency Announcement (BAA) issued by DHS/DNDO in March of 2014. The testbed system is designed to detect, track, and identify potential threatening radiation sources in moving vehicles without interrupting the flow of traffic in typical highway scenarios. The algorithmic...
Changing lanes while driving is one of the primary causes of accidents on highways. Changing lanes is a complex, voluntary maneuver that requires a driver of a vehicle to assess the traffic in the original and target lanes, the adjacent drivers' disposition, as well as the time available to complete the maneuver before undertaking the maneuver. Existing techniques use V2V communication that relies...
This paper introduces the RoadPlot-DATMO, tracking objects around the vehicle using multiple sensors such as radars, 2D LiDARs, and a 3D LiDAR. It consists of the xytracker, the xyztracker, and the fusion; the xytracker tracks moving objects with multiple 2D LiDARs, the xyztracker perceives object information in detail using a 3D LiDAR, and the fusion merges tracks from multiple trackers. It is able...
In the process of highway operation, huge energy consumption occurs and a lot of pollutant will be emitted. To get an intuitive impression on spatial and temporal distribution of energy consumption and emissions, an energy consumption and emissions accounting model based on multiple sensors are provided, which can be used for detection, analysis and management of energy consumption and pollutant emission...
This study proposes an EEG-based forecasting system based on a functional-link recurrent self-evolving fuzzy neural network (FL-RSEFNN) for assessing mental fatigue during a highway driving task. Drivers' cognitive states significantly affect driving safety, especially for fatigue or drowsy driving which is one of common factors to endanger individuals and the public safety. In this study, a FL-RSEFNN...
The paper focuses on the current problem of cryptographic load influence on message transmission within V2V communication in VANETs (Vehicular Ad Hoc Networks) in relation to cooperative intelligent transport systems. In the experimental part actual data gathered from the D1 highway is used to model distinct traffic scenarios for several digital signatures schemes utilised to ensure credibility of...
In this study, we developed a driver-assistance system on Lane Detection during nighttime by mounting a CCD camera inside the car to capture images and to use computer visions to detect lanes and the driving condition in front of the vehicle. This system can increase the safety of driving during low light condition. The features of this system includes: lane detection, surrounding vehicles detection,...
This paper applies device-to-device technique to vehicular-to-vehicular communications (D2D-V) in an underlay fashion. Different from conventional D2D systems focusing on smart phones, whose positions are usually assumed to be statical, the D2D-V system suffers more mobility and uncertainties. These dynamic features indeed complicate the design of D2D-V system, but also, give more potential to accomplish...
In this paper, we propose a mobile AP system for an express bus that moves fast and includes many people densely. By using mobile AP, many users can be considered as one group and it supports high received signal strength for each UEs. In case of conventional wireless communication, we model the system as a multiuser MISO system. By using mobile AP, the model is changed to single user MIMO system...
Vehicular Swarm Network (VSN) technology enables real time inter-vehicular communications for broadcasting all kinds of data collection, including emergency video with high data rate. A challenge in VSN broadcasting is to achieve a high throughput rate while at the same time assure the delivery of video packet flows to all the vehicles traveling over a highway segment from the accident vehicle. This...
This paper develops a modeling framework, based on stochastic geometry and queueing theory, for carrier sense multiple access (CSMA) coordinated inter-vehicle communication, with unsaturated buffers, in a multi-lane highway scenario. We show that the spectrum sensing threshold (ρth) of the CSMA protocol is a critical design parameter that imposes a tradeoff between the transmission success probability...
In this paper, we present an analytical model to find the probability density function of link life time in vehicular ad hoc networks, assuming Rayleigh fading channel conditions and vehicle speed to follow uniform probability distribution. We then investigate the impact of path loss exponent, transmit power, threshold SNR and velocity on the mean link life time. We perform Kolmogorov-Smirnov test...
This paper considers the problem of path planning for autonomous ground vehicles on highways with regular traffic. The goal is to select a desired trajectory from a set of parameterized candidate trajectories such that some criterion is optimized. This selection is subject to avoiding collisions, respecting the traffic rules, and eliciting smooth behavior for passenger comfort. The desired trajectory...
This paper considers the trajectory planning problem of a vehicle system for automated lane change maneuvers. By considering a lane change maneuver as primarily a longitudinal planning problem, the proposed trajectory planning algorithm determines whether there exists a longitudinal trajectory which allows the ego vehicle to safely position itself in a gap between surrounding vehicles in the target...
A Vehicular Ad hoc network (VANET) represents a unique subset among mobile ad hoc networks (MANET), in which the nodes are vehicles provided with their own communications technology. In this paper, there is a convergence of approaches to meet expectations with regard to examining performance in the operational settings in protocols like AID, DBRS, SRD, and the ADDHV, which are designed to disseminate...
This article deals with the problem of estimating the empirical parameters in a traffic flow modeled by the so-called Lighthill-Whitham-Richards equation. The optimal values of parameters are estimated by solving the inverse problem of minimizing the least square error between simulations and lumped observation values. The system equation and adjoint model equation, obtained by using adjoint method,...
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