Planners for Metro, Portland’s regional planning agency, are playing an interesting game. They did a travel survey in 1994, when gas prices were low and the economy was booming. Then they did another survey in 2011, when gas prices were high and the economy was in recession. They found that Portland travelers in 2011 are more likely to bicycle or ride transit and less likely to drive. Naturally, they credit their land-use policies with the change.
The Oregonian is rightly skeptical of the “spin” Metro planners are putting on the numbers. There are several reasons justifying such skepticism.
First, the sample size was small–4,800 people for a region of well over a million people. Second, the numbers do not tally well with the results of the Census Bureau’s American Community survey. The Metro survey found that 81 percent of Portland-area commuters rode in cars and 11 percent took transit to work in 2011. The Census Bureau, however, found that more than 84 percent drove and only 8 percent took transit in 2008. Since the census data are based on a larger sample–more than 25,000 households in Oregon, of which about a third are from the Portland area–it is probably more reliable.
