Prototyping an automatic notification scheme for traffic accidents in vehicular networks

Author(s):  
Manuel Fogue ◽  
Piedad Garrido ◽  
Francisco J. Martinez ◽  
Juan-Carlos Cano ◽  
Carlos T. Calafate ◽  
...  
Author(s):  
Manuel Fogue ◽  
Piedad Garrido ◽  
Francisco J. Martinez ◽  
Juan-Carlos Cano ◽  
Carlos T. Calafate ◽  
...  

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
Alvin Sebastian ◽  
Maolin Tang ◽  
Yanming Feng ◽  
Mark Looi

Road traffic accidents can be reduced by providing early warning to drivers through wireless ad hoc networks. When a vehicle detects an event that may lead to an imminent accident, the vehicle disseminates emergency messages to alert other vehicles that may be endangered by the accident. In many existing broadcast-based dissemination schemes, emergency messages may be sent to a large number of vehicles in the area and can be propagated to only one direction. This paper presents a more efficient context-aware multicast protocol that disseminates messages only to endangered vehicles that may be affected by the emergency event. The endangered vehicles can be identified by calculating the interaction among vehicles based on their motion properties. To ensure fast delivery, the dissemination follows a routing path obtained by computing a minimum delay tree. The multicast protocol uses a generalized approach that can support any arbitrary road topology. The performance of the multicast protocol is compared with existing broadcast protocols by simulating chain collision accidents on a typical highway. Simulation results show that the multicast protocol outperforms the other protocols in terms of reliability, efficiency, and latency.


2015 ◽  
Vol 15 (5) ◽  
pp. 140-150
Author(s):  
Jian Liu ◽  
Hongjiang Zheng ◽  
Wei Chen ◽  
Huiheng Liu

Abstract In recent years urban traffic safety has become a widely concerned issue due to the increasing traffic accidents caused by the growth of private car ownership. A very promising method is to provide high precision navigation service to prevent accidents. Therefore, a Network BDS/RTK System Based on Vehicular Networks (NBRSBVNs) is proposed for high precision positioning in an urban complex traffic environment in this paper. This system considers comprehensively the characteristics of the vehicular network and network RTK techniques, and also provides a new distribution method of high precision differential correction information. According to the massive field tests, this system scheme can support real-time and online high precision navigation service of multiple users at the same time. It has important practical significance in applications for vehicles active safety in a complex urban environment.


2002 ◽  
Vol 17 (S2) ◽  
pp. S9-S10
Author(s):  
Zhang Hong-Qi ◽  
Zhang Yu-Zhen

2000 ◽  
Vol 57 (7) ◽  
pp. 435-438 ◽  
Author(s):  
Laube ◽  
Bloch

Einnicken am Steuer ist eine häufige und verhütbare, aber bisher noch zu wenig beachtete Ursache von Verkehrsunfällen. Eine Hypersomnie mit unfreiwilligem Einschlafen am Steuer in gefährlichen Situationen wird durch akuten oder chronischen Schlafmangel, durch die Schlafqualität beeinträchtigendes Verhalten und krankhafte Schlafstörungen begünstigt. Eine häufige Erkrankung, die sich typischerweise mit vermehrter Einschlafneigung manifestiert, ist das obstruktive Schlafapnoe Syndrom. Betroffene Patienten haben ein deutlich erhöhtes Risiko für Unfälle im Straßenverkehr. Die Früherkennung, Abklärung und Behandlung betroffener Fahrzeuglenker sowie eine gezielte Aufklärung der Öffentlichkeit über das Risiko des Einnickens am Steuer können wesentlich zur Verhütung solcher Unfälle beitragen.


Author(s):  
J. R. Treat ◽  
N. S. Tumbas ◽  
S. T. McDonald ◽  
D. Shinar ◽  
R. D. Hume ◽  
...  

2014 ◽  
Author(s):  
Miroslav Kelemen ◽  
Nikita Bobrov ◽  
Jan Mandelik ◽  
Peter Havaj
Keyword(s):  

Author(s):  
Denys Popelysh ◽  
Yurii Seluk ◽  
Sergyi Tomchuk

This article discusses the question of the possibility of improving the roll stability of partially filled tank vehicles while braking. We consider the dangers associated with partially filled tank vehicles. We give examples of the severe consequences of road traffic accidents that have occurred with tank vehicles carrying dangerous goods. We conducted an analysis of the dynamic processes of fluid flow in the tank and their influence on the basic parameters of the stability of vehicle. When transporting a partially filled tank due to the comparability of the mass of the empty tank with the mass of the fluid being transported, the dynamic qualities of the vehicle change so that they differ significantly from the dynamic characteristics of other vehicles. Due to large displacements of the center of mass of cargo in the tank there are additional loads that act vehicle and significantly reduce the course stability and the drivability. We consider the dynamics of liquid sloshing in moving containers, and give examples of building a mechanical model of an oscillating fluid in a tank and a mathematical model of a vehicle with a tank. We also considered the method of improving the vehicle’s stability, which is based on the prediction of the moment of action and the nature of the dynamic processes of liquid cargo and the implementation of preventive actions by executive mechanisms. Modern automated control systems (anti-lock brake system, anti-slip control systems, stabilization systems, braking forces distribution systems, floor level systems, etc.) use a certain list of elements for collecting necessary parameters and actuators for their work. This gives the ability to influence the course stability properties without interfering with the design of the vehicle only by making changes to the software of these systems. Keywords: tank vehicle, roll stability, mathematical model, vehicle control systems.


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