Peter Callaghan, a reporter for the Minneapolis Post, has figured out that rail transit planners routinely overestimate transit ridership. He calls this the Pickrell Effect, after US DOT researcher Don Pickrell, whose 1990 report found that most rail projects underestimated costs and overestimated ridership.
(Callaghan doesn’t mention the other Pickrell Effect, which is that government employees who report such shenanigans are likely to be sent to the local equivalent of Siberia. For his effort, Pickrell was told by a Deputy Secretary of Transportation that he would never be allowed to work on a transit study again.)
Callaghan does say that Pickrell’s study led to “more scrutiny” by the Federal Transit Administration, resulting in “a measurable improvement in forecasts, with mixed results.” Which is it: an improvement or mixed results? Callaghan says that a 2003 FTA study found that, of 19 projects since the Pickrell report, “only” eleven greatly overestimated ridership while eight came within 20 percent of ridership estimates.
