TEA-21, offered interpretations of its conclusions, and provided suggestions for areas of investigation and analysis.

This final report of the panel represents an expansion of the panel’s letter report, going into more depth in several areas, in particular, more fully assessing the validity of the findings and recommendations in the BTS report. This final report draws on workshop presentations and studies commissioned by the committee to address the utility of current data sources, to examine alternative and emerging means for new data collection or increased data access, and to assess the BTS estimation methodology. In addition, this final report of the panel provides suggestions for areas of further investigation and analysis that would improve the analysis contained in the BTS report.

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