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.
The purpose of this research is to develop a microscopic indicator of risk perception of rear-end collision based on fuzzy inference system in order to effectively surrogate the traditional evaluation method based on the accident data. The factors that result in the rear-end collision such as the relative speed, the acceleration of leader vehicle, car-following safety distance are taken as the fuzzy...
Advance Traveller Information Systems (ATIS) are considered a promising tool to alleviate traffic congestion and improve road network performance. They provide real time traffic information and route recommendation to road users, in order to increase their ability to choose the best alternative path. Though such systems have reached a high technical standard, their actual impact in traffic pattern...
In the scenario of a disaster in the downtown area, an evacuation plan should be considered to move anyone out of the disaster area as soon as possible. In the mean time, emergency rescue crews brought from the suburban or other areas also need to respond to the disaster as soon as possible. Both the inbound emergency vehicle response time and outbound evacuation time are critical to save lives. Evacuating...
One of the fundamental requirements of a traffic management system is the ability to determine when an incident has occurred so that proper responses can be initiated. Most of the existing automatic incident detection techniques suffer from many limitations including their inability to detect incidents under non dense traffic conditions and generation of many false positive alarms. In this paper,...
Driving through streets of an inner city such as a downtown area sometimes can be frustrating. One might have to wait for a traffic light to turn green at an intersection where there is no car on the cross street. Or, there may be a lot of cars on the cross street that must be cleared in order to make the traffic flowing. The objective of this project is to develop an intelligent traffic controller...
Variable message signs (VMS), also known as changeable message signs (CMS) or dynamic message signs (DMS), are traffic control devices to communicate with motorists. A VMS is generally used to inform motorists the roadway, traffic, or weather conditions. It is also used to display travel times and public service announcements. This study attempts to utilize archived traffic data from the MRR1 freeway...
Urban expressways are linked tightly with local surface roads through ramps, and traffic flows at weaving areas are often complex and chaotic. Therefore traffic management of weaving area is very meaningful to the improvement of expressway capacity and the enhancement of traffic safety. Based on the characteristics of drivers, in the paper a cellular automata model is developed to simulate the driving...
Vehicle is a basic element in the road traffic system. Vehicle's movement depends on driver's driving characteristics and driving behaviors. This paper introduced agent theory/technology and ACT-R cognitive behaviors into microscopic traffic simulation. At first, descript agent's properties, structures and its application in traffic simulation, analyzed the structures of ACT-R and driver's cognitive...
The relationship between the velocity discreteness ?? and the venture degree of vehicle rear-end accidents on freeway and urban road is researched by NS model. We could get the following as the results of simulation: Firstly, the value of global standard deviation of velocity on freeway is bigger than the one on urban road. Secondly, the value of venture degree of rear-end accidents is added as the...
Set a reasonable value of max-limited speed is an important part of traffic control. On the basis of systematically analyzing the information processing mode of driver and considered the performance differences of different vehicles, each kind of traffic information in work zone is classified and quantified and a calculation method of different vehiclespsila max-limited speed for work zone of highway...
Mobility Models plays a vital role in the performance evaluation of routing protocols. Research trends are now towards the development of realistic mobility models for vehicle ad hoc networks. In this paper we have given the entities and their characteristics, most important components, for the development of realistic mobility models for vehicle ad hoc networks. We have also described how these components...
Valuation-aware traffic-control mechanisms for road intersections take the valuations of reduced waiting time of the individual drivers into account. They use agents to avoid any disturbance of the driver, and they feature mechanisms specifically designed for negotiating valuations. While such mechanisms do indeed increase overall driver satisfaction, they only allow one vehicle at a time to use the...
In this paper we introduce a visualization application for a vehicle simulation with an automatic pilot. The application is written in OpenGL and includes a model of a vehicle (a motorcycle) based on the physical laws of motion, including kinematics, gravitation, and friction. The vehicle can be controlled by the user through keyboard and mouse commands, as well as by an automatic pilot. The latter...
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.