Event Data Recorders
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Event Data Recorder
This recommended practice describes common definitions and operational elements of Event Data Recorders. The SAE J1698 series of documents consists of the following: SAE J1698-1 - Event Data Recorder - Output Data Definition; Provides common data output formats and definitions for a variety of data elements that may be useful for analyzing vehicle crash and crash-like events that meet specified trigger criteria. SAE J1698-2 - Event Data Recorder - Retrieval Tool Protocol; Utilizes existing industry standards to identify a common physical interface and define the protocols necessary to retrieve records stored by light duty vehicle Event Data Recorders (EDRs). SAE J1698-3 - Event Data Recorder - Compliance Assessment; Defines procedures that may be used to validate that relevant EDR output records conform with the reporting requirements specified in Part 563, Table 1 during the course of FMVSS-208, FMVSS-214 and other applicable vehicle level crash testing. This Recommended Practice was first issued in 2005. It is being revised in order to separate the various aspects of EDRs into other more focused documents. This document now becomes an overall parent document to the other SAE J1698 series of documents.EDR data has multiple potential uses. This document focuses on EDR data used to understand the operation of various vehicles systems such as the occupant protection system. EDR data has application in support of crash reconstruction and assisting in setting roadway safety policies.
Event Data Recorder - Retrieval Tool Protocol
This SAE Recommended Practice utilizes existing industry standards to identify a common physical interface and define the protocols necessary to retrieve records stored by light duty vehicle event data recorders (EDRs). To accomplish this, the SAE J1962 diagnostic connector is designated as the primary physical interface for EDR retrieval tools.This SAE Recommended Practice is intended to be used for the development of EDR retrieval tools. Retrieval tools are intended to interface with light duty vehicles and to produce EDR record reports with data element formats specified by SAE J1698-1.Limitations: This SAE Recommend Practice specifies how EDR records should be imaged, translated, and reported by EDR retrieval tools. It does not specify how EDR records are recorded and stored by individual vehicles. This SAE Recommended Practice addresses EDR record retrieval (including imaging and translating) via the connection to the vehicle's SAE J1962 connector or via direct connection to an electronic control unit (ECU) containing an EDR record. Direct connection to an ECU may require the use of specialized interface adapters. This SAE Recommended Practice is being revised in order to referance SAE J3197. This change was based on recent discussions in the SAE EDR Committee.
Analysis of Event Data Recorder Data for Vehicle Safety Improvement
Author: U.s. Department of Transportation
language: en
Publisher: Createspace Independent Publishing Platform
Release Date: 2008-04-30
The Volpe Center performed a comprehensive engineering analysis of Event Data Recorder(EDR) data supplied by NHTSA to assess its accuracy and usefulness in crash reconstruction and improvement of vehicle safety systems. The Volpe Center gathered and analyzed over 2,500 EDR files that have been downloaded from the National Automotive Sampling System's (NASS) Crashworthiness Data System (CDS), Special Crash Investigations (SCI), and Crash Injury Research & Engineering Network (CIREN) databases supplied by NHTSA. The analyses focused on EDR file format and potential improvements, assessment of crash types where EDR data exist, review of EDR data for accuracy and completeness, EDR data comparisons with existing crash data, review of pre-crash, crash, and post-crash data for usefulness in better understanding the crash reconstruction, identification of error sources, and determination of methods by which researchers could use the EDR data to improve their crash case information.