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Technologies designed to reduce the car accidents are recently being developed. One of type, vehicle to vehicle communication has proven to be highly effective for safer driving. However, effectiveness of vehicle to namdic devices communiation has been overlooked. In this paper, we designed a communication architecture between WAVE and Android. WAVE is the standard protocol of vehicle communication,...
In order to realize lateral control of vehicles on an automated highway system (AHS), it is necessary to measure and/or predict vehicle deviation from the path to be followed (reference line). In this study, a simple multiple look-ahead distance scheme is proposed; in particular, simple feedback control that uses vehicle lateral deviations at three look-ahead points is proposed. Simulations are conducted...
The penetration levels of plug-in electric vehicles (PEVs) is expected to rapidly increase within the next few years due to global trend of energy saving and environmental protection. It is well-known that uncoordinated charging of PEVs in residential distribution feeders will have significant negative impacts on grid performances causing increased losses, poor voltage regulations, network congestion...
Ten years has passed since the Large-scale Retail Store Law in Japan was enforced and store modifications have been planned among many large-scale shopping centers. In such modification plan, parking lot improvement is also carried out at the same time in many cases. By this research, not only knowledge and experimental rules, about the improvement effect of user service of the parking lot layout...
This paper presents dynamic surface control for longitudinal dynamics of a generic hypersonic flight vehicle in presence of unknown dynamics. For the attitude subsystem, the minimal-learning-parameter technique is combined with dynamic surface design. The uniform ultimate boundedness stability is guaranteed via Small-gain Theorem. The singularity problem is removed and the simpler adaptive algorithm...
An improved service of carsharing, one-way service enables customers to use the vehicles from one station and return to other station. The common issue in one-way carsharing service is that the vehicle stock of each station become imbalance, thus will lead to the less customer satisfaction and less utilization of vehicles. Consequently, the relocation is used by the system to move the appropriate...
In driving safety systems for avoiding collision using vehicle to vehicle communication, it is important for each vehicle to know other vehicles' positions and speed data delivered by beacons periodically sent from the vehicles. Each vehicle has to frequently recognize the correct positions of nearby vehicles because the vehicles have a high risk of collision with them. Aiming to make vehicles to...
This paper provides the latest information and progress overview (for the Fiscal Years 2012–2013) of the hybrid and electric systems (HES) R&D projects funded by the Vehicles Technologies Office (VTO) of the U.S. Department of Energy (DOE). HES include battery R&D, electric drive components, and vehicle & systems simulation & testing. Currently there is significant U.S. commitment...
The traffic jam of urban road is one of the important issues of common concern to the international community, which affects the efficiency and quality of city life. In order to solve the urban road traffic congestion problem, this paper gathers information and data about a five forks by the Work Sampling and image analysis method. Then, according to the queuing model of M/M/1, these parameters as...
The article first proposes the criteria of the severity of the incident in the standard and plan is only for delimiting the severe grades of the incident itself, is not suitable for judging the impact of incident on the road traffic in the first scene. To this end this article first proposes the concept of traffic control level. Number of lanes occupied, lane closure time and saturation are as the...
In Delay Tolerant Networks (DTNs), characteristics of mobility model have essential impact on routing protocols design and verification. Most of current studies about network characteristics are derived from theoretical models or small-scale real network traces. Properties of nodes in those networks are simple and can not reflect features in large-scale applications. In addition, few studies focus...
The road capacity can be increased when utilizing the real-time traffic information uploaded by the floating cars. In symmetrical two-route scenario, the influence of the percentage of floating cars (Pflt) on the performance of MVFS and CCFS is analyzed. Simulation results show that Pflt has little influence on the performance of MVFS, while has great influence on the performance of CCFS. The performance...
At present, different viewpoints and theories are put forward on divisions and transitions of traffic states in highway, for which decide the fundamental properties of traffic flow. Coherent-moving state, among these states, was firstly proposed in Helbing's paper [1] to discuss the hypothetical steady states in mixed traffic flow in highway traffic. Since then, possible explanations on existence,...
A separate turn phase is often used at intersection with heavy left turns. This wastes capacity on the approach because some of its lanes cannot discharge during its green phases. The problem can be eliminated by reorganizing traffic on all the lanes upstream of an intersection using a mid-block pre-signal. To evaluate the effectiveness of the pre-signal control system, this study has also conducted...
Range anxiety — the fear of running out of battery power while on the road — is one of the major barriers to large scale adoption of Electric Vehicles (EVs). Range prediction solutions are available to address anxiety but most of them have limited functionalities. In this paper we propose a new, “Accurate Range” and “Energy-efficient Route” (ARER) selection mobile software solution which is based...
For a clustered launch vehicle with extremely complex elastic characteristic, serious chattering of elastic mode occurs in the continuous variable coefficient time domain simulation of its control system. In this paper, the reason of chattering is pointed, and some technologies such as normalization of the elastic mode based on their characteristics, and improvement on the interpolation algorithm...
High-speed trains consume huge electrical energy to run at maximum speed. It is important to measure and analyze accurately the energy consumed during the commercial operation for the energy saving. But there are few studies that report experimental results. This paper presents the measurement results of consumption energy for Korean high-speed trains on the commercial operation conditions and the...
This research categorized U-turn at Signalized Intersections into mainly four modes, designating them as Mode A,B,C,D: Mode A, at the Downstream Section of the Stop Line; Mode B, at Upstream Section of the Stop Line; Mode C, at the Right Side of the Ingress; Mode D, at the Upstream Section of the Transition Zone. We first evaluate their respective efficiency level, and then set up an efficiency evaluation...
With the society's advocacy of "low-carbon energy-saving" way of life, saving energy has been a heated topic. Although the street lamp is an indispensable part of the basic facilities of a city, its large energy consumption at present has wasted a lot of natural resources. In order to solve this problem, many scientific researchers provide many solutions by using software or hardware methods...
Traffic signal control is a challenging task for traffic systems. As fuzzy logic is proved to be well suited to control some complex systems with uncertainties and human perception, it has been widely used to control the traffic signal in recent years. This paper proposes a novel fuzzy logic controller for signalizing modern roundabouts. Different from existing fuzzy traffic-signal controllers, the...
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