CAR “BLACK BOXES” - Crash Data ?· CAR “BLACK BOXES ” MYTHS, REALITIES ... insight into the…

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  • BlackBoxMyths Haight/BakerIASIU2016

    2016CollisionSafetyinstitute 1

    CAR BLACK BOXESMYTHS, REALITIES &

    FRAUD FIGHTING

    W. R. RUSTY HAIGHTSCOTT BAKER

    W. R. RUSTY HAIGHT

    Collision Safety Institute (2002-) TEEX, Texas A&M, staff

    1990-2001 NUCPS, instructor/contractor

    Recent chapter on CDR

    1285+ crash tests 1025 in the car (5/16) 170 air bag deployments Top speed: 53.8mph (86.5km/h) Top delta-V: -26mph (-42km/h)

    Guinness World Record Most Human Subject Crash Tests

    1999-present

    San Diego Police Dept. Accident Investigation Bureau to 1984 RustyHaight@collisionsafety.net

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    BLACK BOX?WHAT ARE WE REALLY TALKING ABOUT HERE?

    Flight Data Recorder vs Event Data Recorder Is there really a difference?

    Flight Data Recorder (FDR) Always recording aircraft flight data

    Event Data Recorder (EDR) Not a stand alone device May record data in passenger cars, light trucks

    and SUVs

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    IRONICALLY In the recent tragic fatal crash involving a private plane and a

    Nissan Sentra Guess which one of the involved vehicles had crash data?

    And neither had a black box but the Nissan had an EDR

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    WORDS MEAN THINGS The Airbag Control Module (ACM) is a safety

    systems control module first, and then may, if the conditions are right, have the potential to record data to an Event Data Recorder (EDR) subcomponent An ACM may also be called an Electronic

    Control Unit (ECU)

    The Event Data Recorder (EDR) is a subcomponent, a part, of an Airbag Control Module (ACM) which may record information after a crash or other physical occurrence if the conditions are right

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    WHERE DOES THE NAME EDR COME FROM? Title 49, CFR Part 563 CFR: Code of Federal Regulations NHTSA: National Highway Traffic Safety Administration

    Event data recorder (EDR) means a device or function in a vehicle that records the vehicle's dynamic time-series data during the time period just prior to a crash event (e.g., vehicle speed vs. time) or during a crash event (e.g., delta-V vs. time), intended for retrieval after the crash event. For the purposes of this definition, the event data do not include

    audio and video data. - Emphasis added

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    SO, WHAT IS CDR? CDR is the acronym for the Bosch Crash Data Retrieval

    (CDR) Tool It does NOT stand for crash data recorder

    The Crash Data Retrieval Tool is a system of componentswhich retrieves event/crash data which may be recorded in the EDR subcomponent of certain passenger cars, light trucks and SUVs

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    Not all steps are applicable to all situations or module types

    Crash occurs & dataMAY be recorded

    to the EDR function

    Does the vehiclehave an airbag

    system?

    Y N

    There is nodata to retrieve

    Does the veh/modulehave an EDR capability??

    Y N

    Was the physical eventthe type reqd for recording?

    Y N

    Was there power at themodule to record some data?

    Using the CDR Tool, oneshould be able

    to retrieve useful data

    Y N.

    MAY BE RECORDED?

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    THE REAL POTENTIAL Despite some potential for there not being data in a given

    vehicle, there are currently more than 150 million registered vehicles on the road in North America with available data Covering more than 17 vehicle manufacturers over model years

    from 1994-2017!!

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    MAY NOT OR WILL NOT RECORD? EDR Rule #1: the systems may not record data for a number

    of reasons BUT they never record data when the cars been parked with the key off

    When the key is turned from the run position, one of the cars

    main computers tells all the others to shut down that includes the airbag control

    module. When its shut down, it cant see an event and wont

    record data

    ACM

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    MYTH VS REALITY

    CAR BLACK BOXES- MYTHS, REALITIES & FRAUD FIGHTING

    MYTH VS REALITYMYTH

    Im going to download the CDR

    Heard as a vendors proposal for retrieving data from an insureds or claimants vehicle

    From a claimants attorney wanting access to a car

    REALITY

    False

    EDR Rule #2: There is no CDR to download

    CDR is an acronym for the proper name of a tool/system

    The statement gives us good insight into the vendor or lawyers actual knowledge or understanding of the technology

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    MYTH VS REALITYMYTH

    Ive heard about that CDR (EDR, black box) stuff, its something required by Federal law, right?

    Every car has this thing, right?

    REALITY

    False

    49CFR563 is a regulation not a law and it does not require a manufacturer to have an EDR capable device

    Not every car (not even every car with an airbag) has an EDR function and not all systems work the same across all manufacturers

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    49CFR563.2 - PURPOSE 563.2 - Purpose The purpose of this part is to help ensure that EDRs record, in a

    readily usable manner, data valuable for effective crash investigations and for analysis of safety equipment performance(e.g., advanced restraint systems). These data will help provide a better understanding of the circumstances in which crashes and injuries occur and will lead to safer vehicle designs.

    - Emphasis added

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    49CFR563 DATA ELEMENTS 563.6 Requirements for vehicles. Each vehicle equipped with an EDR must meet the requirements

    specified in 563.7 for data elements, 563.8 for data format, 563.9 for data capture, 563.10 for crash test performance and survivability, and 563.11 for information in owner's manual.

    563.7 Data elements. (a) Data elements required for all vehicles. Each vehicle

    equipped with an EDR must record all of the data elements listed in Table I, during the interval/time and at the sample rate specified in that table.

    - Emphasis added

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    49CFR563.7 TABLE I:REQUIRED DATA ELEMENTS Crash severity

    Longitudinal delta-V Maximum longitudinal delta-V Time to the maximum longitudinal

    delta-V

    Pre-crash data for up to about 5 seconds before the event

    Vehicle speed Engine throttle percentage of full

    (or accelerator pedal percentage of full)

    Service brake on or off Driver seat belt buckled or

    unbuckled

    Event relativity Whether or not there was a single

    or two connected events The time between events if there

    were 2 Ignition cycle count at the time of

    the crash and at the download

    Airbag system operation Air bag warning lamp on or off How long it took to deploy the

    drivers and right front passengers airbags

    An indication of whether or not the event record was completely recorded in the EDR after the crash

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    THERE MAY ALSO BE CONDITIONAL ELEMENTS Crash severity Lateral delta-V

    Pre-crash data for up to about 5 seconds before the event Engine RPM Roll angle ABS activity Steering input Right front passenger seat belt buckled or unbuckled Some indication of the presence or approximate size of the right

    front passenger Sometimes even information about the driver

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    DELTA-V? Many are familiar with the term from low speed crashes LIST and MIST claims often focus on estimates or sometimes

    outright guesses related to delta-V and that to injury potential

    Delta-V is a measure of the crash severity Severity is not based on impact speed EDR data objectively reports delta-V It tells us how bad the crash was for the occupants and how in

    what direction - the impact acted on the car and occupants

    Delta-V isnt about how fast youre going, its about the sudden stop at the end

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    DEL