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With the development of the intelligent transportation systems (ITS), and the widely used technologies of road testing, machine vision etc. in the field of intelligent vehicle, it is possible for the smart car to move automatically in well-structured environments. As for urban complex environments, the researches on unmanned intelligent vehicle are still at the initial stage. For the more complex...
Supposed the perception of traffic information and the controlling decision of vehicles are correct. The delay of controlling actions is researched in the paper, and the function of driver non-response probability is advanced. Based on the function, the timing curve of divers' response is made. Then the risk model of Rear-ends accidents is established to evaluate the probability of Rear-end accident,...
In order to improve the efficiency of the expressway and solve the problem of traffic congestion, this paper introduces the HOV lanes, and a comprehensive evaluation model for HOV lanes was established with the analytic hierarchy process taking into account the facts such as the efficiency of transport operations, resources and environment, and economic and financial. Specific road section was selected...
This paper describes a road condition perception and forward collision warning system (PWS). It enhances the capability of road condition perception, and improves the drive-safety. Firstly the research background, development of intelligent vehicle and road condition perception technology are introduced. Then the structure of PWS is proposed. It consists of three levels: road condition perception...
This paper presents a filter that is able to simultaneously estimate the behaviors of traffic participants and anticipate their future trajectories. This is achieved by recognizing the type of situation derived from the local situational context, which subsumes all information relevant for the drivers decision making. By explicitly taking into account the interactions between vehicles, it achieves...
Transportation division plays an important role of emission of carbon dioxide. Improvement of fuel efficiency is a direct and valid approach for solving the above-mentioned problem. For decreasing the fuel consumption of vehicles moving on highway, the proper driving strategies are essential. In this paper, an optimization method for vehicle fuel-efficient driving strategies on highway is proposed...
The development of the autonomous vehicle named “Caroline” for the 2007 DARPA Urban Challenge was a great opportunity to demonstrate the abilities of the Technische Universität Braunschweig in the research field of autonomous driving. Among 11 teams out of the initially 89, the CarOLO team mastered the challenges to qualify for the final DARPA Urban Challenge event. Based on this experience, the...
The use of wireless technology based on Vehicular Ad hoc Networks (VANETs) for information exchange can influence the drivers' behavior towards improving driving performance and reducing road accidents. This information can even be more relevant if it is presented as a video stream. In this paper we propose a system that relies on VANET and video-streaming technology: the See-Through System (STS)...
This paper elaborates on the Cybercars-2 Wireless Communication Framework for driverless city vehicles, which is used for Vehicle-to-Vehicle and Vehicle-to-Infrastructure communication. The developed framework improves the safety and efficiency of driverless city vehicles. Furthermore, this paper also elaborates on the vehicle control software architecture. On-road tests of both the communication...
Increasing number of vehicles, lack of awareness among road users and many other causes are said to be linked to road accidents. However no specific literature was found to rank causes of road accidents based on fuzzy data of multi-criteria decision making. This paper proposes a ranking of five selected causes linked to road accidents. Types of vehicles involved in road accidents are considered as...
Vehicle detection and classification of vehicles play an important role in decision making for the purpose of traffic control and management. In this paper we propose a novel and efficient algorithm based on image processing using aerial cameras for vehicle detection and classification especially in highways. The algorithm is mainly based on a sequence of morphological methods being applied on an...
By invoking a cut of satellite image as an as-is representation of local terrain, roadway pattern can be segmented and extended towards possible destinations prior to physical arrival. Guided by the roadway pattern to be projected into associated scene image, in this paper, stochastic perception-control coupling is introduced for anticipative maneuvering through naturally complex scene. In this scheme,...
This paper presents a method for estimating how the driver of a vehicle can use steering, braking or acceleration to avoid a collision with a moving object. In the method, the motion of the object can be described with an arbitrary motion model and polygons are used to describe its expected extension. The key idea is to parameterize the motion of the vehicle such that an analytical solution can be...
A new method of two-way traffic signal timing control based on speed is presented. The whole control structure is divided into the decision-making level and control level. Two new measurements are put forward which weigh traffic urgency degree and differentiate traffic flow states separately based on traffic demands. Two-way traffic control and one-way traffic control can be transformed into each...
A single-vehicle crash is a typical pattern of traffic accidents and tends to cause heavy loss. The purpose of this study is to identify the factors significantly influencing single-vehicle crash injury severity, using a data selected from Beijing city for a 4-year period. Rough set theory was applied to complete the injury severity analysis, and followed by applying cross-validation method to estimate...
Vehicle shift quality evaluation is the basis of integrated control for shift quality. To overcome the shortcomings of traditional subjective evaluation method for vehicle shift quality, a new approach to shift quality subjective evaluation based on fuzzy logic and evidence theory is proposed in this paper. People's feeling is adopted as instrumentation in the proposed method. The results of subjective...
A fatigue driving model was established to investigate the relationship of driver fatigue with driving action and driving dynamics parameters. The target of this model is providing a theoretical basis for early warning study of fatigue driving. The model includes parameters of perception, decision-making and driving operations. From a step test with steady-state in the correction link these parameters...
Rapid response is the core function of the highway emergency assistance system and the corresponding reasonable dispatching of rescue resource can shorten the response time. This paper deals with the problem of dispatching emergency vehicles on the highway. Optimization model is formulated by regarding the generalized response time as decision-making object. The parameters of model include travel...
A stochastic simulation model using archived automatic vehicle location(AVL) and automatic passenger count (APC) data to simulate a fixed transit route service and test preventive bus operation control strategies against unreliability was developed. In this model, the bus operation and passenger demand were simulated based on AVL and APC data, and the decision-making process of preventive strategies...
This paper proposes a new method for automatically detecting the states of the road surface from tire noises of vehicles. The methods are based on a fast Fourier transform analysis, an artificial neural network, and the mathematical theory of evidence. The proposed classification is carried out in sets of multiple neural networks using the learning vector quantization networks. The outcomes of the...
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