Collision Sciences
CrashScan & EDR validation studies — Summary
Document ID: CSI-VAL-SUM-001 Version: 2.3 | October 11, 2026 Owner: Collision Sciences
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Document purpose
This controlled summary provides a current index and plain language technical synopsis of Collision Sciences and partner research relevant to Event Data Recorder validation, CrashScan retrieval and translation, cross platform consistency, controlled crash testing, long term data integrity, bench extraction, real world speed validation and independent metadata comparison. It is intended for reconstruction professionals, forensic engineers, insurers, legal professionals, researchers and technical reviewers.
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Executive summary
The current core validation set contains nine distinct studies and supporting validation reports. Taken together, they support a layered validation framework: independent measurement validates the vehicle recorded data; cross platform comparisons validate retrieval and translation; real world comparisons test field accuracy; repeated retrieval examines persistence; and metadata comparisons provide an additional independent consistency check. Results should always be interpreted within the recording limits, sampling characteristics and vehicle specific definitions applicable to the source EDR.
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1. Current validation study set
The studies below are the current validation corpus maintained in the CrashScan Master Resources. The corpus now includes both the DSD 2026 controlled crash test article authored by Jason M. Bayley, P.Eng., MBA, and the independent EDR Europe comparative report based on the same DSD crash testing program.
1.1. Studies and principal findings
Compatible EDR analysis - CrashScan, XENTRY & Bosch CDR
Multi vehicle comparison of CrashScan, Bosch CDR and OEM diagnostic approaches. The work demonstrates strong agreement in directly comparable core EDR outputs while documenting differences in metadata, reporting structure, vehicle coverage and workflow.
Cross verification of Mercedes-Benz EDR data using CrashScan & XENTRY
Cross verification of Mercedes Benz EDR information using CrashScan, Xentry and supporting extraction methods. The study reports consistency across systems and demonstrates the value of combining digital vehicle data with physical evidence in forensic case analysis.
Comparative forensic study - CrashScan EDR vs DEWESoft Krypton
Controlled crash testing comparing CrashScan derived EDR outputs with high frequency DEWESoft Krypton reference measurements. The results support the accuracy of key recorded crash parameters while emphasizing normal EDR sampling and resolution limitations.
Forensic verification of EDR outputs against reference measurement systems
Controlled test research examining EDR outputs against independent reference measurements and repeated retrieval. The work supports the integrity and persistence of stored crash information while reinforcing the need to distinguish what a module recorded from how a retrieval system later extracts and presents it.
Bench-top forensic extraction of EDR data with CrashScan & CDR
Technical study of direct module communication and retrieval using CAN, K Line and module memory. It documents reliable bench extraction when correct communication, connection and evidence handling procedures are followed.
Validation of EDR speed measurements in real-world crashes (2025)
Real world comparison of EDR recorded speed against GPS measurements in 12 South African crash cases. The reported mean difference was approximately 1.69 km/h, or 1.71 percent, supporting strong agreement while recognizing that rapidly changing vehicle states and sampling intervals can create small differences.
Validation of CrashScan EDR data through BMW Drive Recorder metadata
Independent consistency study comparing CrashScan EDR information with BMW Drive Recorder metadata. Agreement between separately generated vehicle data sources provides an additional validation pathway beyond tool to tool comparison.
DSD 2026 controlled crash test validation
The newest study analyzes seven controlled DSD crash tests using independent 500 Hz data acquisition measurements, OEM or ACM records and CrashScan outputs. It explicitly separates recording validity from retrieval and translation validity, documents strong Bosch CDR and CrashScan agreement for directly comparable outputs, and includes repeated test analysis. This conventional scientific paper is the current canonical article for the DSD 2026 study.
EDR Europe CrashScan comparative report English
Independent EDR Europe technical report dated April 23, 2026, based on the March 30, 2026 DSD crash testing program in Austria. The report compares CrashScan and Bosch CDR outputs with independent DSD instrumentation. For the Toyota Auris P03 and Toyota Yaris P04 case study, it concludes that CrashScan data show substantial technical correspondence with Bosch CDR and are consistent with the independent instrumentation and observable test dynamics. The report also documents CrashScan architecture, raw-data retention, transmission and storage security, traceability, quality review, event interpretation, and limitations relevant to forensic use.
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2. Interpretation framework
- Validate the recorded parameter against an independent reference when one is available; agreement between retrieval tools alone does not independently validate the underlying vehicle sensor or recording process.
- Separate recording validity from retrieval and translation validity. A valid extraction can faithfully reproduce a parameter that is itself subject to OEM defined sampling, quantization, trigger logic or recording limitations.
- Preserve the original report, raw data where available, vehicle identification, acquisition method and applicable OEM definitions and limitations so the validation chain can be independently reviewed.
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References
Comparative Evaluation: CrashScan, Xentry & Bosch CDR
https://drive.google.com/file/d/164-i-WEBgQ73h1LHjk3M4CRosvxi7JuG/view
Cross Verification of Mercedes Benz EDR Data Using CrashScan and Xentry
https://drive.google.com/file/d/1PBEWWv2gV8GKp_GvGQKA7wenZ3Gxuem2/view
Comparative Forensic Study of CrashScan EDR Outputs and a DEWESoft Krypton Reference System
https://drive.google.com/file/d/1QvNNGN3s-hU0gEJobKmqDiqcNsfuwfYA/view
Forensic Verification of EDR Outputs against Reference Measurement Systems in Controlled Crash Tests
https://drive.google.com/file/d/1algjfMC_4pWlCsvpX-yN8jh8N07q8xhL/view
Bench Top Forensic Extraction of EDR Data with CrashScan and CDR from ACMs via CAN and K Line
https://drive.google.com/file/d/1l9DcndAfdsoCtzMMa1nlAO1Kjj7jZ1Wq/view
Validation of Event Data Recorder Speed Measurements in Real World Crashes for Forensic Analysis (2025)
https://drive.google.com/file/d/14w7jOomHfJNId_TjVaeJrHkihF4_nwDF/view
Validation of CrashScan EDR Data Through Consistency with BMW Drive Recorder Metadata
https://drive.google.com/file/d/1R4YwXkv2C7mUAqfwcyxrjEy_BRmpkg8H/view
DSD 2026 Controlled Crash Test Validation — Bayley
https://drive.google.com/file/d/1gRmer1RPclYgW9bUFXvoKv86WG0yo2kN/view
EDR Europe Comparative EDR Data Report - DSD 2026 Crash Test (English)
https://drive.google.com/file/d/1XTnToe3p8KYFDArwb08KJs9ODJlNe5Ms/view
CrashScan Master Resources - Canonical
https://drive.google.com/file/d/1WvQ9_Z07ap_8_zStyof7YlNeV5yZpOmZ/view
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Related public resources
The broader Global EDR Scientific Validation & Technical Literature Index is currently unavailable. Digital Vehicle Forensic Guideline - evidentiary collection, interpretation and admissibility context
https://drive.google.com/file/d/1qSc5nMH03ufis1XxT0eEBPiecPFZ4WU4/view
Global EDR Admissibility and Scientific Validation Reference - legal/scientific cross-reference
https://drive.google.com/file/d/1j1GQ4W_qkdMnCvOSlqpmtKOSg_Ad-5s0/view
CrashScan FAQ - Getting Started & New Clients
https://drive.google.com/file/d/161cy1RwlM__mKrDgIPVs0WETO9Vl6Yxq/view
CrashScan Case Spotlights - Real World EDR Questions
https://drive.google.com/file/d/1hwFoX6o1zPumNEgpWiXnOFtGUKwlFX7-/view
