simulation of real-world accident scenarios of the gidas database using carmaker · 2016. 10....

Verkehrsunfallforschung an der TU Dresden GmbH

Simulation of Real World AccidentSimulation of Real-World AccidentScenarios of the GIDAS Database

Using CarMakerUsing CarMaker

Christian T. ErbsmehlMichael WagnerMichael Wagner


Overview

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VUFO (GIDAS)• VUFO (GIDAS)• Motivation• Simulation process

• Pre-Processingg• Simulation• Post-Processing (incl. real example)

• GIDAS pre-crash-matrix• Content of GIDAS PCM• Potential of PCM

31.08.2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 2


VUFO

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Documentation of traffic accidents

D t il d d t ti f b t 1000 id t llDetailed documentation of about 1000 accidents annually

8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 3


VUFO

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Documentation of traffic accidents

German In-Depth Accident Study (GIDAS)German In-Depth Accident Study (GIDAS)

Federal Highway Research Institute

Research Association for Automotive Technology

Verkehrsunfallforschungan der TU Dresden GmbH

Hannover Medical Schoolan der TU Dresden GmbH School

GIDAS


GIDAS2000 accidents/year


VUFO

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GIDAS status as of 01 07 2012

Documentation of traffic accidentsGIDAS – status as of 01.07.2012

22.347 completely documented & reconstructed traffic accidents

40.038 hi l

55.750 29.697 i j d

40.038 t ti

traffic accidents

26.449passenger cars

vehicles

37.830 occupants

persons

76.736 injuries

injured persons

89.838 events

reconstructions

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2.618 trucks

p

4.589 truck/ bus/tram-occup.

j

21.665 slightly injured

34.747 vehicle-vehhicle-collisions

862 buses & trams

3.001 pedestrians

7.414severely injured

11.444 vehicle-object-collisons


9.989 (motor-)cycles

10.330 (motor-) cycle-occupants

618 fatalities


Motivation

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Road safety Traffic accidentPrevention/reduction of

injury severity

Traffic accident

Safety of environment

Passive safety accident databasesDevelopment of driver

assistance systems

y

Active safety

??? Traffic accident simulation

Benefit for road safety

???



Simulation process - Overview

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Pre-Processing Simulation Post-Processing

Definition of parameters

Computation of Analysis of solutions parameters each simulation step

&Storaging of results

&3D-plotting



Simulation process – Pre-Processing

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Vehicle properties

GIDAS

• Height• Width• Length• Length• Weight• Type of driveType of drive• Tire dimensions• …




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Vehicle properties

Calculated data

• Center of gravity• Moments of inertia• Track• …




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Velocity profile

GIDASReconstruction data: - Collision velocity

- Deceleration- Braking distance

ty (v

)V

eloc

it

Collision

Ti (t)


Time(t)



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Digital accident sketch




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Road properties

Road surfaceGIDAS

Road coatingGIDAS

Dry Asphalt

Table (Danner / Halm)


Fricitionµ=0.75


Simulation process - Simulation

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Trajectory of opponent BUSopponent BUS

T= (-5…0) seconds



Simulation process – Post-Processing

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Real accident

Comparison Virtual accident fi ti 1

Virtual accident fi ti 2 Co pa so configuration 1configuration 2



Post-Processing - Exemplary Accident

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Example


Source: GIDAS



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ExampleAccident scene with view restriction

Participant 1

P ti i t 2


Source: GIDASParticipant 2



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Graphic results

Real accident




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Graphic results

Virtual accident configuration 1




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Graphic results





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Real accident

Comparison Virtual accident fi ti 1

Virtual accident fi ti 2 Co pa so configuration 1configuration 2




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Virtual accident configuration 2configuration 1 configuration 2



GIDAS-PCM

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GIDAS pre-crash-matrix (PCM)

Sequence of accident events

Point of no return Collision

Level of detail in GIDAS-database

Area for evaluation of active safety t


systems


GIDAS-PCM - Content

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Simulation results of real accident



GIDAS-PCM - Potential

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• Detailed research of pre-crash• For single cases and pool of accidents• For single cases and pool of accidents• Acceleration• Visibility• Visibility• Velocitiy

Position• Position• View restriction

Sample applications:




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TTC Position (x/y) Visibility

Scatter plot for hiddenScatter plot for

TTC=1 secOpponent of accident 1

(4/28)

hidden

visible

Opponent of accident 2

(-11/7)

31.08.2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 25



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Thank you for your attention!

simulation of real-world accident scenarios of the gidas database using carmaker · 2016. 10....

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