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Development of Alternative Measures of Transit Mode Share
Transit mode share is used as a critical barometer at various
geopraphic levels. Its magnitudes and temporal trends plan an
important role in both policy debates at areawide levels
(nationwide, state. regions, counties, cities) and in
performance monitoring at sub-area levels (activity centers and
corridors). The census journey-to-work data have typically been
used for areawide measurement of transit's usual mode share,
i.e., the share of workers who usually use transit for
commuting. There has been much controversy and confusion in the
literature about using census journey-to-work data for
measuring transit mode share.
The objectives of this report are to examine the controversy and confusion in
the literature and to develop alternative measures of transit mode share. This
report covers the following aspects: 1) a framework for considering transit mode
share and its measurement; 2) the relationship between transit's usual mode
share and its actual mode share, i.e., the share of work trips that are made by
transit as revealed by respondents to daily travel surveys; 3) the sensitivity
of transit mode share to a variety of measurement concerns raised in the
literature; 4) areawide measurement of transit mode share; 5) sub-area
measurement of transit mode share; and 6) recommendations.
A copy of the final report is
available here in pdf format, and in
HTML format. For more information,
contact Xuehao Chu at xchu@cutr.usf.edu.
05.31.07
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813.974.5168 fax