NHTSA data reference guide version 4.b. Volume 2, biomechanical tests

NHTSA · 1999 · ROSA P / United States. Department of Transportation. National Highway Traffic Safety Administration

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Summary

This document serves as Volume II of the NHTSA Data Reference Guide (Version 4.b), published in May 1999 by the National Highway Traffic Safety Administration. It establishes the standardized data submission format for biomechanical tests conducted under NHTSA contracts. The guide is motivated by the need to support the National Traffic and Motor Vehicle Safety Act of 1966, which mandates the development of Federal Motor Vehicle Safety Standards to reduce motor vehicle fatalities and injuries. To facilitate this, NHTSA maintains a crash test database, initiated in 1978, containing results from over 3,500 tests. This specific volume addresses the biomechanics database, which is distinct from vehicle, component, and signal waveform generator databases. It is designed to document human impact responses, evaluate prototype or standard dummy designs, and assess dummy performance in new impact environments. The guide provides a comprehensive schema for data submission on 3.5-inch diskettes or CD-ROMs, requiring raw data unless filtered data is authorized. It defines specific data fields across nine chapters: General Test Information (e.g., test number, objectives, impact angle); Dummy Occupant Information (e.g., Head Injury Criterion, chest severity index, dummy size); Biological Specimen Occupant Information (e.g., cadaver age, weight, rib fracture counts, bone marrow area); Occupant Restraints Information (e.g., restraint type, deployment); Anthropometric Information (e.g., stature, limb circumferences); Occupant Injury Information (e.g., Abbreviated Injury Scale, lesion type); Instrumentation Information (e.g., sensor type, location, calibration); and Chest Band/Gauge Information. The document specifies field types, character limits, and units for each variable. It also includes appendices detailing media formats, codes, field layouts, and coordinate systems, alongside instructions for using the ENTREEW software to generate specification files. The significance of this guide lies in its role as a regulatory and technical standard for data interoperability within the safety research community. By enforcing a uniform format, it ensures that biomechanical data from diverse sources—such as pendulum tests on cadavers or sled tests with new dummy designs—can be consistently loaded, analyzed, and exchanged. This standardization supports the analytical tools used to evaluate measurement data, thereby facilitating the development of evidence-based safety standards. The guide explicitly warns that submissions failing to adhere to the correct format will be rejected, underscoring its function as a mandatory protocol for contractors and researchers contributing to NHTSA’s safety research initiatives.

Key finding

The document is a data formatting specification and does not contain experimental results or research findings.

Methodology

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• naturalistic crash near crash

Information type

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• Applied Guidance: standards test procedures
• Methodological Resource: dataset resource