TRB’s National Cooperative Highway Research Program (NCHRP) Research Results Digest 298: Use of Event Data Recorder (EDR) Technology for Highway Crash Data Analysis examines the benefits and the costs of using EDR data in highway crash data analysis and research. The report also summarizes the final report of NCHRP Project 17-24 that is available as NCHRP Web-Only Document 75. Web-Only Document 75 examines recommendations for the enhancement of EDRs to meet the specific needs of highway crash data analysis and includes recommended EDR database format for agencies that seek to collect and systematically store EDR data.