Author: Richard I. EmoriPublisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 7
Book Description
Vehicle Trajectories After Intersection Collision Impact
Author: Richard I. EmoriPublisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 7
Book Description
Post Impact Trajectory of Vehicles at Metropolitan Intersections
Author: Sam DoeckePublisher:
ISBN: 9781921645983
Category : Roads
Languages : en
Pages : 38
Book Description
This report describes the path of vehicles following a collision with another vehicle at a metropolitan intersection. The aim was to provide guidance to transport authorities on roadside design at intersections to protect vehicles from secondary impacts with roadside objects. Detailed information from in-depth investigations of 78 intersection crashes was analysed. Crashes at singalised and unsignalised intersections were analysed separately. Thirty two vehicles at signalised and unsignalised intersections (16 at each) were involved in a secondary collision. Nine of these collisions were more severe than the initial vehicle-to-vehicle collision, three at signalised intersections and six at unsignalised intersections. Following the vehicle-to-vehicle impact at both signalised and unsignalised intersections, more than half of the vehicles came to rest within 10 metres of the impact point. However, more than a quarter travelled 15 metres or further and around 10% travelled further than 27 metres. It was found that 40% of vehicles at signalised intersections crossed the designated pedestrian crossing areas following a collision between vehicles. It was also found that 14% of vehicles involved in crashes at signalised intersections departed the roadway. This poses a significant risk to pedestrians who are in the vicinity of junctions at the time of collisions. Graphical representations of the percentage of vehicles that travel through a given sector relative to the impact point following the metropolitan intersection crashes were developed. These can be used to determine the chance of a vehicle having a secondary collision with roadside objects.
Post Impact Trajectory of Vehicles at Rural Intersections
Author: Sam DoeckePublisher:
ISBN: 9781921645235
Category : Roads
Languages : en
Pages : 19
Book Description
This report describes the path of vehicles following a collision with another vehicle at a rural intersection. Detailed information from in-depth investigations of 70 intersection crashes was analysed. Rear end crashes at intersections were excluded as were collisions involving a motorcycle. Intersection geometry, speed zone, impact point and mass ratio influence the nature of the post impact trajectory of the vehicles involved. As the results show a high number of vehicles travel a large distance at a shallow angle following an intersection collision, extending crash barriers on the through road (the road with the right of way) right up to the intersection may have some benefit. Clear zones surrounding the intersection are also advisable and have an added benefit of increasing sight distance. Hazards can be assessed for removal or relocation by applying the results of this study. Keywords: Intersection, rural road, traffic accident.
Report
Author: Highway Safety Literature
Author: A Subject Bibliography from Highway Safety Literature
Author: United States. National Highway Traffic Safety AdministrationPublisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 768
Book Description
S.A.E. Transactions
Author: Society of Automotive EngineersPublisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 786
Book Description
Beginning in 1985, one section is devoted to a special topic
Predicting Vehicle Trajectory
Author: Cesar BarriosPublisher: CRC Press
ISBN: 1138031623
Category : Technology & Engineering
Languages : en
Pages : 190
Book Description
This book concentrates on improving the prediction of a vehicle’s future trajectory, particularly on non-straight paths. Having an accurate prediction of where a vehicle is heading is crucial for the system to reliably determine possible path intersections of more than one vehicle at the same time. The US DOT will be mandating that all vehicle manufacturers begin implementing V2V and V2I systems, so very soon collision avoidance systems will no longer rely on line of sight sensors, but instead will be able to take into account another vehicle’s spatial movements to determine if the future trajectories of the vehicles will intersect at the same time. Furthermore, the book introduces the reader to some improvements when predicting the future trajectory of a vehicle and presents a novel temporary solution on how to speed up the implementation of such V2V collision avoidance systems. Additionally, it evaluates whether smartphones can be used for trajectory predictions, in an attempt to populate a V2V collision avoidance system faster than a vehicle manufacturer can.
The Journal of Automotive Engineering
Author: Mechanical Impact Dynamics
Author: Raymond M. BrachPublisher: Brach Engineering, LLC
ISBN: 0979433304
Category : Dynamics
Languages : en
Pages : 284
Book Description