Contrary to the claims of many transit advocates, regions that spend more money on transit seem to grow slower than regions that spend less. The fastest-growing urban areas of the country tend to offer transit service mainly to people who lack access to automobiles. Urban areas that seek to provide high-cost transit services, such as trains, in order to attract people out of their cars, tend to grow far slower.
Transit advocates often argue that a particular city or region must spend more on urban transit in order to support the growth of that region. To test that claim, I downloaded the latest historic data files from the National Transit Database, specifically the capital funding and service data and operating expenses by mode time series. These files list which urbanized area each transit agency primarily serves, so it was easy to compare these data with Census Bureau population data from 1990, 2000, and 2010.
The transit data include capital and operating expenses for all years from 1991 through 2011. I decided to compare the average of 1991 through 2000 per capita expenses with population growth in the 1990s, and the average of 2001 through 2010 per capita expenses with population growth in the 2010s. In case there is a delayed response, I also compared the average of 1990 through 2000 per capita expenses with population growth in the 2000s. Although it shouldn’t matter too much, I used GNP deflators to convert all costs to 2012 dollars.