The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper describes a development of vision sensor that can detect shockwave propagation that is one of main factors of accidents in highway traffic flow. In addition, realization of a driver assistance system that informs arrival of such shockwave to drivers by the vision sensors is shown. To evaluate the reliability of the system, both recall rate and false rate of the system is investigated by...
We present an adaptive brake warning system in order to help a driver keep a safe distance from the cars in front to avoid rear-end collisions. The safe distance continuously varies according to the carpsilas velocity, driving events, and road conditions. Three sensors, an ECU reader, a camera, and a laser range finder, are used to collect the vehicular velocity, the density of cars on the road and...
Highways are an essential component of our society because they are critical to quality of life and to local and national economies. Under good conditions, highways provide a safe and efficient route for people and goods to reach their destinations. However, as a direct consequence of their use, traffic congestion is ever-increasing, undermining the ability of highways to adequately provide an acceptable...
Current driver assistance systems such as Adaptive Cruise Control (ACC) and in particular future assistance systems such as Collision Warning make high demands on reliability of detection and ranging methods for vehicles within the local vicinity. Autonomous systems such as Radar which are already integrated into a multitude of vehicles meet these requirements to only a limited extent. As an alternative,...
This paper describes effects of sensing measurement errors on safety performance of driving assistance systems using on-board sensors. After modeling of measurement errors, using a microscopic traffic flow simulator introducing the model, safety performance evaluation of the driving assistance system is carried out. It is quantitatively shown that measurement errors influence the safety performance...
This paper describes autonomous vehicle and driver assistance research beginning with the 1997 National Automated Highway System Consortium Demonstration. As a microcosm of the community at large we discuss how Carnegie Mellon autonomous vehicle research has progressed in the last decade. Since the demonstration we have formed two companies: AssistWare became a leading developer of lane departure...
We have proposed an instruction system for improving the parking operation by elderly drivers with the use of the trajectory of each driver at a parking lot. Experiments on the evaluation of the system with 18 elderly drivers were conducted. The results of comparison between the trajectories before and after the instruction show that the average precision of parking trajectories was improved. In addition,...
This paper presents the development of a system that will allow a visually-impaired person to safely operate a motor vehicle. Named the blind driver challenge, the purpose of the project is to improve the independence of the visually-impaired by allowing them to travel at their convenience. The system development is targeted to be deployed on Team Victor Tangopsilas DARPA Urban Challenge vehicle ldquoOdin...
Automobiles have deeply impacted the way in which people travel but they have also caused a number of deaths and injury due to crashes. Driver inattention, inexperience, poor judgment and/or fatigue etc., are the major contributing factors in crashes. In order to address these complex issues, scientists have developed a number of technological systems ranging from anti-lock braking system (ABS), early...
In this paper, we present the modular design and implementation of an intelligent cruise control system, following the principles of system of systems engineering. The proposed intelligent cruise control system can be seen as system of systems, which consists of several different subsystems. Different subsystems communicate with each other and existing electronic systems on the automobile via programmed...
Risky steering operations are detected based on the relationship between the radius of road curvature and road design speed defined in the road construction ordinance. Vehicle motion while steering is approximated as a circular motion, and the vehicle trajectory radius is estimated from lateral acceleration and vehicle velocity captured with a drive recorder based on a circular motion equation. Steering...
We propose a system that can record driving events and detect unsafe driving behaviors. Three sensors, an engine control unit (ECU) reader, a 3-axis accelerometer, and a camera are used, in which they represent the car, the passenger, and the driverpsilas perspective. Our system combines data from these three sensors with a fuzzy inference system to identify an event of hazardous driving. The output...
This paper discusses our ongoing research efforts in regards to processing multi-scale queries in service-oriented environments. A multi-scale query is a query over traditional datasets in conjunction with streaming data and that may involve spatio-temporal aspects. In a service-oriented environment, classic and streaming data are made available and processed through services, which we refer to as...
In order to improve traffic safety, it is important to reduce driver's reaction time during emergency braking. Practice on an autodrome outfitted with special sets of equipment is one of the methods of reducing driver's reaction time. In doing so, it is necessary to determine driver's reaction time in the first place. The present article describes a methodology to determine driver's reaction time...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.