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KODSI FORENSIC ENGINEERING
When in doubt, go forensic!
1
© Kodsi Engineering Inc. 2015 – All Rights Reserved
Black Boxes &...
KODSI FORENSIC ENGINEERING
When in doubt, go forensic!
2
© Kodsi Engineering Inc. 2015 – All Rights Reserved
What is it?
T...
KODSI FORENSIC ENGINEERING
When in doubt, go forensic!
3
© Kodsi Engineering Inc. 2015 – All Rights Reserved
What does it ...
KODSI FORENSIC ENGINEERING
When in doubt, go forensic!
4
© Kodsi Engineering Inc. 2015 – All Rights Reserved
Commonly reco...
KODSI FORENSIC ENGINEERING
When in doubt, go forensic!
5
© Kodsi Engineering Inc. 2015 – All Rights Reserved
History and e...
KODSI FORENSIC ENGINEERING
When in doubt, go forensic!
6
© Kodsi Engineering Inc. 2015 – All Rights Reserved
The data stor...
KODSI FORENSIC ENGINEERING
When in doubt, go forensic!
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© Kodsi Engineering Inc. 2015 – All Rights Reserved
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Black Boxes and Evidence Preservation

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Learn more about current black box or EDR (Electronic Data Recorder) technology in vehicles and what information can be preserved after a crash.

Published in: Automotive
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Black Boxes and Evidence Preservation

  1. 1. KODSI FORENSIC ENGINEERING When in doubt, go forensic! 1 © Kodsi Engineering Inc. 2015 – All Rights Reserved Black Boxes & Evidence Preservation
  2. 2. KODSI FORENSIC ENGINEERING When in doubt, go forensic! 2 © Kodsi Engineering Inc. 2015 – All Rights Reserved What is it? The “Black Box” •  Technically, the black box is referred to as an Event Data Recorder (EDR) •  Typically it is the vehicle’s Airbag Control Module: –  It senses accelerations –  It decides whether or not to deploy airbags •  Its secondary function is data recording –  And the recorded data can be “imaged”! •  Current EDR technology is primarily reactive not proactive •  The stored data provides experts with a powerful tool to aid in collision reconstruction
  3. 3. KODSI FORENSIC ENGINEERING When in doubt, go forensic! 3 © Kodsi Engineering Inc. 2015 – All Rights Reserved What does it record? The “Black Box” Deployment Events •  Recorded when an airbag was commanded to deploy during a collision •  Deployment Events are locked and cannot be overwritten •  If airbags have already deployed and the vehicle is involved in subsequent and related severe collision, some modules may record a Deployment Level Event Non-Deployment Events •  Recorded when the vehicle experiences higher than normal accelerations sufficient enough to “wake up” the system, but not high enough to warrant an air bag deployment •  Non-Deployment Events are not locked and may be overwritten •  Some modules may erase an event after 250 ignition cycles
  4. 4. KODSI FORENSIC ENGINEERING When in doubt, go forensic! 4 © Kodsi Engineering Inc. 2015 – All Rights Reserved Commonly recorded parameters The “Black Box” Note: The data recorded depends on the vehicle make, model, and year; whether or not data was stored depends on the severity of the event.
  5. 5. KODSI FORENSIC ENGINEERING When in doubt, go forensic! 5 © Kodsi Engineering Inc. 2015 – All Rights Reserved History and evolution The “Black Box” The capabilities of the EDR have increased significantly since their introduction, and are expected to continue to do so. Longitudinal Delta V Deployment & non- deployment events Ignition cycles Driver seat belt Longitudinal & Lateral Delta V Passenger seat belt* Multiple events Event classification Pre-crash data Passenger seat belt Steering Position Self-driving telemetry? GPS position? Vehicle-to- infrastructure communication? Inter-vehicle communication?
  6. 6. KODSI FORENSIC ENGINEERING When in doubt, go forensic! 6 © Kodsi Engineering Inc. 2015 – All Rights Reserved The data stored within a black box may be lost (i.e. spoliation) due to: •  Vehicle Salvage •  EDR Replacement •  Improper Handling/Imaging •  Moisture/Fire Damage •  Tampering Preserve evidence early to avoid having data overwritten or lost! The data recorded by black boxes could be inaccurate in certain collision scenarios: •  Vehicle yaw, pitch or roll (pre-impact) •  Wheel slip or wheel lock •  Large changes in drivetrain (especially tire diameter) Preserving Black Box Evidence Why it’s critical to have a qualified professional preserve evidence early: Black box modules should be handled and interpreted by trained individuals who are aware of how these modules record and store information to ensure information is not overwritten or misinterpreted
  7. 7. KODSI FORENSIC ENGINEERING When in doubt, go forensic! 7 © Kodsi Engineering Inc. 2015 – All Rights Reserved Did you know that we offer seminars at our office or yours? To schedule a more in-depth presentation for you and your team about black boxes and evidence preservation, or any of the current topics on the right, contact us directly at: 416-977-0009 1-800-263-6351 info@kodsiengineering.com

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