Optimizing traffic signal control (TSC) at intersections continues to pose a challenging problem, particularly for large-scale networks. It has been shown in past research that it is feasible optimize the operations of individual TSC systems or small collection such systems. However, computationally difficult scale these solution approaches large networks partly due curse dimensionality encount...

In this paper, we introduce an efficient communication protocol for vehicular ad hoc networks (VANETs) based on conditionally anonymous ring signature scheme to address the issue on anonymous authentication and efficient tracking in case of a dispute. It offers low storage requirements and fast message authentication. In addition, the proposed protocol does not require Road-side Units to aid to...

Network communication is crucial for Infrastructure-Vehicle Cooperative Autonomous Driving (IVCAD), which can help to improve both driving safety and efficiency. Existing IVCAD systems either use RoadSide Units (RSUs) deployed sparsely in critical locations extend the on-board sensing, or RSUs densely a limited area provide sensing decision-making vehicles. For scenarios, numbers of vehicles ar...

Vehicular networks have been widely considered as a promising architecture to enable vehicles-to-vehicle (V2V) and vehicle-toinfrastructure (V2I) connections, and the wireless access to the Internet for the vehicles. Current sparse deployment of the roadside units (RSUs) requires multi-hop data transmission among the vehicles and the RSUs, and thus vehicular ad hoc network (VANET) has been intr...

Vehicular cloud computing (VCC) system coordinates the vehicular cloud (consisting of vehicles’ computing resources) and the remote cloud properly to provide in-time services to users. Although pervious works had established the models for resource allocation in the VCC system based on semiMarkov decision processes (SMDP), few of them discussed heterogeneity of vehicles and influences of roadsi...

this study is to report characteristics of people killed in road traffic crashes and to describe major patterns of traffic crashes in china.descriptive and inferential statistical analyses were conducted. road traffic death national data, population denominator data and motor vehicles data of 2009 were obtained from the bureau of traffic management at ministry of public security and national bu...

Vehicular Ad hoc NETworks (VANETs) have emerged as a platform to support intelligent inter-vehicle communication and improve traffic safety and performance. The road-constrained, high mobility of vehicles, their unbounded power source, and the emergence of roadside wireless infrastructures make VANETs a challenging research topic. A key to the development of protocols for inter-vehicle communic...

Failure detectors are one of the fundamental components for maintaining the high availability of vehicular cloud computing. In vehicular cloud computing, lots of RSUs are deployed along the road to improve the connectivity. Many of them are equipped with solar battery due to the unavailability or excess expense of wired electrical power. So it is important to reduce the battery consumption of R...

As vehicular communications bring the promise of improved road safety and optimized road traffic through cooperative systems applications, it becomes a prerequisite to make vehicular communications secure for the successful deployment of vehicular ad hoc networks. In this paper, we propose an efficient authentication protocol with anonymous public key certificates for secure vehicular communica...

Intermittently connected vehicular networks (ICVNs) consist of vehicles moving on roads and stationary roadside units (RSUs) deployed along roads. In ICVNs, the long distances between RSUs large volume content lead to download delays high traffic overhead backhaul links. Fortunately, improved storage size enhanced mobility prediction afford opportunities ameliorate these problems by proactively...