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Introduction 13 3. Could the techniques found effective for TIFA and the Hazmat Serious Truck Crash Project be applied to databases that include or focus on hazmat transport? These questions are considered throughout the analyses of the databases in Chapter 4 and in the potential measures and conclusions presented in Chapter 5. 1.4 Potential Measures to Enhance the Ability of Databases to Identify the Root Causes of Hazmat Crashes After the team performed the literature review, surveys, and database analyses, it identified potential measures for improving the ability of selected databases to identify the root causes of hazmat crashes. Included are specific measures for improving the quality of data, reducing underreporting, adding fields that will improve the identification of root causes, and linking descriptions of the same accident in different databases. Finally, a method is outlined to supple- ment the databases through additional data checks and collection of additional data from key sources. The measures are organized in a hierarchy based on whether the focus is on data improvement, institutional challenges, or the cost of implementing particular solutions. The potential measures are provided in Chapter 5.