A Model to Assess Risk of Injury in Traffic Accidents as a Function of Regularized Test Impact Speed

1984 ◽  
Author(s):  
Walter Schmid
Keyword(s):  
Traffic Accidents ◽  
Impact Speed ◽  
Risk Of Injury ◽  
Test Impact

Alcohol intoxication in road traffic accidents leads to higher impact speed difference, higher ISS and MAIS, and higher preclinical mortality

Alcohol ◽  
2012 ◽  
Vol 46 (7) ◽  
pp. 681-686 ◽  
Author(s):  
Timo Stübig ◽  
Maximilian Petri ◽  
Christian Zeckey ◽  
Stephan Brand ◽  
Christian Müller ◽  
...  
Keyword(s):  
Traffic Accidents ◽  
Road Traffic ◽  
Alcohol Intoxication ◽  
Road Traffic Accidents ◽  
Impact Speed ◽  
Speed Difference

Regression Analysis of Pedestrian Fatality Risk and Impact Speed

2014 ◽  
Vol 971-973 ◽  
pp. 1300-1303
Author(s):  
Zhen Zhang ◽  
Gui Fan Zhao ◽  
Na Yang ◽  
Xiao Cheng
Keyword(s):  
Traffic Accidents ◽  
Developed Countries ◽  
Chi Square ◽  
Impact Speed ◽  
Fatality Risk ◽  
Logistic Regression Models ◽  
Chi Square Test ◽  
Pedestrian Traffic ◽  
Long Head ◽  
The Relationship

In order to study the relationship between pedestrian fatality risk and impact speed in domestic pedestrian traffic accidents. According to the frontal shapes of domestic vehicles, this paper divided the vehicle types into long head car, short head car and flat car. Used in-depth accident study method to collect a large number of actual traffic accidents cases. The logistic regression models of pedestrian fatality risk and impact speed of long head car, short head car and flat car were established. The Wald Chi-Square test was used to validate the accuracy of the model. The results shows: The long head car corresponds to the lowest pedestrian fatality risk, the flat car corresponds to the highest values. Compared with developed countries, the developed emergency and medical care play an important role in reducing the pedestrian fatality risk.

A Method to Evaluate Vehicle Impact Speeds in Passenger Car-Pedestrian Accidents

2016 ◽  
Vol 835 ◽  
pp. 788-792
Author(s):  
Cheng Jian Feng ◽  
Kui Li ◽  
Zhi Yong Yin
Keyword(s):  
Traffic Accidents ◽  
Linear Regression Analysis ◽  
Average Height ◽  
Passenger Car ◽  
Impact Speed ◽  
Pedestrian Injury ◽  
Vehicle Impact ◽  
Pedestrian Crashes ◽  
The Impact ◽  
The Relationship

This paper aimed to research the relationship between the wrap around distance (WAD) to head contact and vehicle impact speed based on real pedestrian traffic accidents with video. A team was established to collect passenger car-pedestrian accident cases occurring between July 2011 and July 2015 in Chongqing, China. A total of 15 pedestrian crashes were selected into the sample. Impact speeds were calculated by a video analysis technology, and the WAD was revised according to the average height of pedestrians involved in the sample. The relationship between the WAD and impact speed was analyzed using linear regression analysis. We propose a method to evaluate the impact speed in passenger car-pedestrian. These results will contribute to the development of judicial identification and research of pedestrian injury.

A system for simulating structural intrusion in automobile full-frontal and frontal-offset crashes in the laboratory sled test environment

1997 ◽  
Vol 211 (5) ◽  
pp. 325-336 ◽  
Author(s):  
C R Bass ◽  
J R Crandall ◽  
E Dekel ◽  
A Jordan ◽  
W D Pilkey
Keyword(s):  
Lower Extremity ◽  
Impact Test ◽  
Test Results ◽  
Test Environment ◽  
Sled Test ◽  
Acceleration Pulse ◽  
Risk Of Injury ◽  
Test Impact ◽  
Sled System

A sled system capable of producing structural intrusion in the footwell region of an automobile has been developed. The system couples the hydraulic decelerator of the sled to actuator pistons attached to the toepan and floorpan structure of the buck. Characterization of the footwell intrusion event is based on developing a toepan pulse analogous to the acceleration pulse used to characterize sled and vehicle decelerations. Sled tests with the system indicate that it is capable of accurately and repeatably simulating toepan/floorpan intrusion into the occupant footwell. Test results, including a comparison of lower extremity response between intrusion sled tests and no intrusion sled tests, indicate that this system is capable of repeatable, controlled structural intrusion during a sled test impact. Test results also suggest that lower extremity forcing during footwell intrusion is significantly larger than such forcing with no intrusion, and that response and risk of injury for occupants in frontal or frontal-offset crashes are more severe.

scholarly journals Neck Moment Response Characterization of Restrained Child Occupant at Standard Test Impact Speed 24.4 km/h

2014 ◽  
Vol 8 (1) ◽  
pp. 113-119
Author(s):  
S. Shasthri ◽  
V. Kausalyah ◽  
Q.H. Shah ◽  
K.A. Abdullah ◽  
M. M. Idres ◽  
...  
Keyword(s):  
Standard Test ◽  
Impact Speed ◽  
Child Occupant ◽  
Test Impact

Assessment of NCHRP Report 350 Test Conditions

2002 ◽  
Vol 1797 (1) ◽  
pp. 38-43 ◽  
Author(s):  
King K. Mak ◽  
Roger P. Bligh
Keyword(s):  
Policy Decision ◽  
Impact Angle ◽  
Impact Speed ◽  
Current Test ◽  
Test Conditions ◽  
Level 3 ◽  
Current Impact ◽  
Areas Of Interest ◽  
The Impact ◽  
Test Impact

The appropriateness of test conditions specified in NCHRP Report 350 was assessed. The assessment focused on the basic Test Level 3 and addressed two areas of interest: the effects of higher speed limit on impact speed and the appropriateness of 25° for the impact angle. The following conclusions and recommendations were drawn on the basis of the results of the analysis: ( a) the current test impact speed of 100 km/h (62.2 mph) should be maintained, ( b) the current impact angle of 25° for Test 11 of length-of-need sections of permanent longitudinal barriers should be maintained, ( c) the test impact angle should be reduced from 25° to 20° for Test 11 of length-of-need sections of temporary longitudinal barriers, and ( d) the test impact angle should be reduced from 25° to 20° for Test 21 of barrier transition sections. However, the selection of impact conditions is more a policy decision than a technical issue to be resolved in the update of NCHRP Report 350 guidelines.

Asteroid and Comet Impact Speeds upon Mars: Significance for Panspermia and the Supply of Organics

1997 ◽  
Vol 161 ◽  
pp. 197-201 ◽  
Author(s):  
Duncan Steel
Keyword(s):  
Probability Distributions ◽  
Regions Of Interest ◽  
Significant Fraction ◽  
Organic Chemicals ◽  
Impact Speed ◽  
The Mean ◽  
The Impact

AbstractWhilst lithopanspermia depends upon massive impacts occurring at a speed above some limit, the intact delivery of organic chemicals or other volatiles to a planet requires the impact speed to be below some other limit such that a significant fraction of that material escapes destruction. Thus the two opposite ends of the impact speed distributions are the regions of interest in the bioastronomical context, whereas much modelling work on impacts delivers, or makes use of, only the mean speed. Here the probability distributions of impact speeds upon Mars are calculated for (i) the orbital distribution of known asteroids; and (ii) the expected distribution of near-parabolic cometary orbits. It is found that cometary impacts are far more likely to eject rocks from Mars (over 99 percent of the cometary impacts are at speeds above 20 km/sec, but at most 5 percent of the asteroidal impacts); paradoxically, the objects impacting at speeds low enough to make organic/volatile survival possible (the asteroids) are those which are depleted in such species.

Management of Mass Casualties from Traffic Accidents in China

2002 ◽  
Vol 17 (S2) ◽  
pp. S9-S10
Author(s):  
Zhang Hong-Qi ◽  
Zhang Yu-Zhen
Keyword(s):  
Traffic Accidents ◽  
Mass Casualties
Sign in / Sign up

Export Citation Format

Share Document