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Automated ground vehicles are becoming a reality for future deployment due to their potential improvement of safety, comfort or emission reductions. However, some challenges remain unsolved such as navigation in dynamic urban environments, where safety and comfort are paramount. In this paper, a novel speed profile generator, based on quintic Bézier curves, is presented. This approach permits to improve...
Diverging diamond interchanges (DDI) have been proved to outperform other types of diamond interchanges in terms of safety, cost-effectiveness and efficiency, but most of those research efforts were based on case studies using simulation or empirical analysis. Few research efforts have been done to conduct the analytic calculation of delay, with which optimization of timing plans can be acquired more...
Field Operational Tests (FOT) or Naturalistic Driving Studies (NDS) is necessary to evaluate advanced driver assistance system (ADAS) as well as the naturalistic driver behavior. Due to incidents (related to crash events) may lead to collision accidents, it is necessary to do the related studies on incidents to improve traffic safety. In these studies a large volume of data was collected and a lot...
On consideration of analyzing the relation between drivers' decisions when the vehicle-cross process happens in a non-signalized intersection, a cooperative driving model is proposed based on reduplicate dynamic game. Considering some driving characteristics in our daily life, a profit function is established with safety, rapidity and comfort indicators in vehicle-cross process. Then, the multiple...
A frequently raised argument against safely-driving automated vehicles is that they would not harmonize well with traffic flow—unrealistically large headways would invite other traffic participants to cut in and thus put passengers of following automated vehicles at risk. In order to test this hypothesis, we use real data of thousands of vehicles recorded in the United States as part of the Next Generation...
Suppose we are given an autonomous vehicle that has limitations, meaning that it may need to transfer control back to the human driver to guarantee safety in certain situations. This paper presents work on designing a user interface to assist this hand off by considering the effects of the expression of internal and external awareness. Internal awareness is the concept of knowing whether or not the...
The goal of this research is to use agent simulation in realizing human-machine interaction, so that we can perform different aspects of experiments. The domain that we have chosen is the pedestrian-vehicle interaction in street crossing. The participants of the simulation include pedestrians, vehicles, and traffic lights, which are all represented by agents. The autonomous nature along with individual...
The future generation of wireless networks is expected to support a significantly large amount of mobile data traffic, massive number of wireless connections and devices, achieve better cost, increased energy and spectral efficiency, improved quality of service (QoS) in terms of communication delay, capacity, reliability and security. The main techniques that will enable these features are massive...
Security mechanisms recommended by VANET standardization bodies are not sufficient to stop authorized vehicles from sending bogus or fake messages that in the worst cases could put people's life at risk. There are efforts in evaluating the behaviour of the vehicles in VANETs, based on reputation mechanisms. However, the most of them compromise the privacy, the messages are linkable and no anonymous...
In the paper, an insulation protection system for high-voltage live working robot applicable to 10 kV distribution power systems is introduced. According to the current high-voltage live working conditions with the relevant requirements of the insulation protection system and the relevant national standards, a high-voltage insulation protection system which not only meets the needs of robot operation...
Vehicle to Vehicle (V2V) communication systems enable vehicles to communicate with each other and use the shared information to make safety related decisions. However, the safety improvement of the current V2V systems only benefits V2V-enabled objects in the V2V network. The Pedestrian Automatic Emergency Braking System (PAEB) can utilize onboard sensors to detect pedestrians and make safety related...
Increasing automation of vehicle guidance is one of the major trends in the automotive industry. Some auto makers have announced that automated vehicles will be deployed in public traffic by the end of this decade (level 4 in sense of the definition of SAE, level 5 later). Until then, one central challenge is ensuring functional safety of automated vehicles. Still, it is not clear how safety concepts...
Safety and acceptability are main concerns in the design of driver assistance system. In fact, these two requirements sometimes may conflict with each other depending on e situation and driver. This conflict is more emphasized particularly in the case of considering elderly driver. In order to solve this problem, this paper proposes a new driver-vehicle cooperation scheme, a ‘supervisory cooperation...
The goal of the work in this paper is to use occupancy grid in integrating safety distances with the planning strategy for autonomous vehicle navigation. The challenge is to avoid static and dynamic obstacles at high speed with respect to some specific road rules while following a global reference trajectory. Our local trajectory planning algorithm is based on the method of clothoid tentacles. It...
Intelligent Transportation Systems (ITS) are based on the intelligence placed on roadside units and onboard vehicles. ITS technologies, like connected cars, improve road safety by having vehicles communicating with each other, with the infrastructure, or both. The communication uses the 5.9 GHz band, called Dedicated Short Range Communications (DSRC), and protocols defined in the Wireless Access in...
Optimal Arrival Time Scheduling (OATS) is a strategy for intersection control in an environment of highly or fully automated vehicles previously developed by the authors. It schedules vehicle arrivals at the intersection with a Mixed Integer Linear Program (MILP). OATS goal is to minimize vehicle delay at the intersection and its approaches while avoiding collisions. This goal is achieved by decomposing...
V2V transmission of Safety Warning Message (SWM) can provide warning before emergency occurs to avoid accident, and remind surrounding vehicles to avoid potential danger. There are two main problems that will affect the transmission performance of SWM, namely the high local flow and low efficiency caused by high probability of sub-health vehicles (SHV) and traditional single channel and flooding transmission...
Visible Light Communication (VLC) is a new emerging technology that is being proposed as a reliable and supportive choice for short range communications in ITS. On the same context, Laser Range Finders (LRF) sensors are used for the vehicular environment perception. Compared to VLC, LRF can provide more coverage range and extended viewing angle. To take the full advantages of both technologies features,...
Both safety and non-safety applications of vehicular networks rely on accurate position information. However, accurate localization of a vehicle in a global navigation satellite system (GNSS) denied environment is a challenging and still open research problem. The 802.11p dedicated short-range communication systems (DSRC), designed for vehicle-to-vehicle and vehicle-to-infrastructure communications,...
Connected vehicles extend the capability of information collection, and thus open more opportunities for innovative advanced driver assistance systems (ADAS). In this paper, we propose a Lane Speed Monitoring (LSM) application based on vehicle-to-vehicle (V2V) communication. This application takes advantage of Basic Safety Messages (BSM) transmitted from equipped vehicles via dedicated short range...
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