Discontinuous Time-domain Video Oriented Traffic Accident Reconstruction Technology under Virtual Projection Scene

2021 ◽  
Author(s):  
Ran Wei ◽  
Yi Li ◽  
Pingfan Li ◽  
Biao Gong
Keyword(s):  
Time Domain ◽  
Traffic Accident ◽  
Accident Reconstruction

scholarly journals Determination of Selected Crash Parameters in Head-on Vehicle Collision with Rollover

2016 ◽  
Vol 28 (1) ◽  
pp. 71-79
Author(s):  
Tomáš Coufal ◽  
Marek Semela
Keyword(s):  
Traffic Accident ◽  
Crash Test ◽  
Accident Reconstruction ◽  
Vehicle Collision ◽  
Reconstruction Software ◽  
Vehicle Rollover ◽  
Head And Neck Injury ◽  
Small Overlap ◽  
Crush Zone

The paper presents complete results of the head-on small overlap crash test of vehicle with driver moving at a speed of approximately 12 m/s against stationary vehicle with post-crash rollover. When a crash does not involve the main crush-zone structures, the occupant compartment is not well protected. The emphasis in the paper was put on determination and presentation of crash parameters for the application in traffic accident analyses and for simulation with the help of software for accident reconstruction. The experimentally measured data from the crash test were analysed and important crash parameters which are necessary for accident reconstruction were obtained. The crash test was specific because of rollover of the impacting vehicle resulting from small overlap. The results have shown that small overlap accident is extremely dangerous for the crew with the possibility of vehicle rollover and occupant head and neck injury. Also in this case, at relative low speed, the driver suffered light neck and head injury in the following days and the longitudinal damage was relatively large. The input parameters for accident reconstruction software as the result of performed crash test were gained.

Recognition and Extraction of Debris Parameters in Traffic Accident Picture

2013 ◽  
Vol 572 ◽  
pp. 570-573
Author(s):  
Xue Jing Du ◽  
Huan Huan Guo
Keyword(s):  
Image Processing ◽  
Noise Reduction ◽  
Camera Calibration ◽  
Traffic Accident ◽  
Accident Reconstruction ◽  
Characteristic Parameters ◽  
Real Size ◽  
Proportional Relationship ◽  
Extraction Parameters ◽  
Actual Size

In order to obtain characteristic parameters of the debris from accident pictures for traffic accident reconstruction, MATLAB image processing technology was applied to deal with accident pictures such as grayscale transformation, binarization, noise reduction and segmentation. According to the proportional relationship obtained by camera calibration between pixel and the actual size, the diameter of sphere debris, the length and width of rectangular debris were achieved. The error calculated by comparing extraction parameters of accident picture with real size is within 5%.

An Investigation on Speedometer Pointer Residual-Value of Crashing Vehicle and its Application in Accident Reconstruction

2012 ◽  
Vol 152-154 ◽  
pp. 1177-1182
Author(s):  
Yuan Quan ◽  
Xiao Qi Chen ◽  
Yi Bing Li
Keyword(s):  
Traffic Accident ◽  
Effective Means ◽  
Research Work ◽  
Accident Reconstruction ◽  
Vehicle Speed ◽  
Damage And Failure ◽  
Vehicle Collision ◽  
Vehicle Impact ◽  
Speed Identification ◽  
Real Traffic

According to the experience of traffic accident investigation over the years, the pointer of some crashed vehicles’ speedometer will stay in one place because of collision spread or heavily vibration, which may indicate the vehicle collision speed. However, the correlation between the residual speed value and actual vehicle collision speed still remains to be examined. For the practical needs of traffic accident reconstruction, this research work is carried out. Based on the principles of traditional speedometers, vehicle impact mechanics and failure mechanism, the damage and failure mode of speedometer in collision are studied. Through the statistics of 15 real traffic accident cases, the features and law about the pointer information of damaged speedometers are obtained initially. As an example, one of these cases is analyzed and calculated to verify the assumption. The availability of the mark information on the indicated place of speedometer after accidents (i.e. the correlation between the speed value of pointers and actual vehicle collision speed) is discussed, which can provide effective means and references for accident reconstruction and vehicle speed identification.

Probabilistic Inverse Simulation and its Application in Vehicle Accident Reconstruction

2013 ◽  
Author(s):  
Xiaoyun Zhang ◽  
Zhen Hu ◽  
Xiaoping Du
Keyword(s):  
Traffic Accident ◽  
Joint Probability ◽  
Accident Reconstruction ◽  
Direct Simulation ◽  
Inverse Simulation ◽  
Vehicle Accident ◽  
Simulation Output ◽  
Simulation Input ◽  
Input Variables ◽  
Joint Probability Density

Inverse simulation is an inverse process of direct simulation. It determines unknown input variables of the direct simulation for a given set of simulation output variables. Uncertainties usually exist, making it difficult to solve inverse simulation problems. The objective of this research is to account for uncertainties in inverse simulation in order to produce high confidence in simulation results. The major approach is the use of the maximum likelihood methodology, which determines not only unknown deterministic input variables but also the realizations of random input variables. Both types of variables are solved on the condition that the joint probability density of all the random variables is maximum. The proposed methodology is applied to a traffic accident reconstruction problem where the simulation output (accident consequences) is known and the simulation input (velocities of the vehicle at the beginning of crash) is sought.

scholarly journals Application of Motorcycle Engine Brake Performance to Traffic Accident Reconstruction

2017 ◽  
Vol 22 (1) ◽  
pp. 35-42
Author(s):  
Hitoshi Toda ◽  
Takao Ogura ◽  
Tomoyasu Ito ◽  
Katsuki Isowa ◽  
Kouki Ueji ◽  
...  
Keyword(s):  
Traffic Accident ◽  
Accident Reconstruction ◽  
Brake Performance ◽  
Motorcycle Engine
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