Transportation energy data book: edition 23 - Oak Ridge National ...

APPENDIX A
SOURCES & METHODOLOGIES
This appendix contains documentation of the estimation procedures used by ORNL. The
reader can examine the methodology behind the estimates and form an opinion as to their utility.
The appendix is arranged by subject heading. Only tables which contain ORNL estimations are
documented in Appendix A; all other tables have sources listed at the bottom of the table. Since
abbreviations are used throughout the appendix, a list of abbreviations is also included.
Contents of Appendix A
List of Abbreviations Used in Appendix A ...................................... A–2
Energy Use Sources ........................................................ A–3
Highway energy use .................................................... A–3
Off-highway energy use ................................................. A–8
Nonhighway energy use ................................................. A–9
Passenger Travel and Energy Use ............................................. A–19
Highway Passenger Mode Energy Intensities .................................... A–23
Nonhighway Mode Energy Intensities .......................................... A–25
Freight Movement and Energy Use ............................................ A–26
Freight Mode Energy Intensities .............................................. A–27
Highway Vehicle Stock and New Sales......................................... A–28
Fleet Vehicle Data ......................................................... A–33
TRANSPORTATION ENERGY DATA BOOK: EDITION 23—2003
A–1