The
first set of transportation figures from the 2000 Census long form –
known as the Journey to Work data – give us a glimpse of the travel
behavior of people commuting to work.
However, the data is limited and other surveys may present a more
complete picture of travel behavior.
The figures show
that the average time it took commuters to get to work was 25.5 minutes
– up two minutes from 1990. They
also show that, as more Americans moved to sprawling areas with fewer
transportation choices, a greater share of commuters drove alone to
work: up from 73.2 percent to 75.7 percent.
Working at home, or telecommuting, made the largest gains in
modal share, growing from 3.0 to 3.3 percent. Transit’s
share of commute trips declined by 11 percent over the last decade, from
5.3 percent to 4.7 percent. Walking
to work and carpooling also posted declines, with walking dropping from
3.9 percent of work trips to 2.9 percent, and carpooling’s share of
work trips declining from 13.4 to 12.2 percent.
While data on bicycling to work is not yet
available from the Decennial Census, results from a Census supplemental
survey conducted in 2000 show bicycling’s mode share growing 9 percent
during the decade.
Why the Census
Data Tells Only Part of the Story
The Census Journey to Work (JTW) data is by far the
most comprehensive snapshot of commuting in the United States, but it
has nothing to say about the 80 percent of trips that are for other
purposes. The Census
JTW data does not include information on shopping trips, school trips,
or recreational trips. All
Census data is for a single week in April, and relies on respondent
judgments of travel time and other factors. In addition, because the
Census asks respondents to indicate the mode of transportation they usually
take to work, it fails to count people who took transit, bicycled, or
walked to work occasionally. And,
where people used more than one mode to get to work (i.e. walking to a
transit station), only the mode that commuters estimated carried them
most of the distance is counted.
Some Different Views
Several national-level data sources can provide
some insight into what the Census is missing, and give an entirely
different view of public transportation, bicycling and walking in the
last decade.
The Omnibus Household Survey, a nationwide monthly
survey of 1,000 households conducted by the Bureau of Transportation
Statistics, collects data on core questions about general travel experiences.
The most recent release of the data, in May 2002, shows that when
you look beyond work trips, many Americans use more than one way to get
around. While the majority
of Americans stick to the same mode day in and day out, almost 40
percent (37.4%) complement their typical means of travel with a different
mode: for example, driving for some trips while bicycling for others.
As mentioned above, the
Census shows that less than 5 percent of commuters take transit as their
usual mode to work. However,
the Omnibus survey finds that 14 percent of all Americans reported using
transit at least once for some type of trip in the past month.
This figure is artificially low because many areas don’t
offer transit (see decoder #3); it climbs to 22 percent when only areas
where transit is available are counted.
This is considerably higher than the number of Americans who
flew on a commercial airline in the past month – just 11 percent.
Other methods of getting
around also show up when occasional and non-work trips are counted: two
percent of Americans
rode a bicycle to work or to do errands, and 16 percent walked to work
or to do errands. While by
no means an apples-to-apples comparison, the graph above is useful in
illustrating the gaps in the Census JTW data.
The Census figures also fail to capture the most
recent upward trend in total transit ridership, which counts transit
trips for all purposes. According
to the American Public Transportation Association (APTA), ridership
figures in 2000 reached their highest levels in over 40 years, only to
be surpassed again in 2001. From
1996 through 2001, public transit experienced six consecutive years of
strong ridership growth (22 percent total), a dramatic reversal of
ridership declines earlier in the decade. APTA’s ridership figures
clearly show that transit is an increasingly important part of the
American travel equation.