The GAO report is at
http://www.gao.gov/products/GAO-09-317Some articles about it:
Given the challenges, how do Asian and European countries pay for their high-speed trains? The GAO found that fast rail systems in France, Spain and Japan are generating sufficient passenger revenue to cover ongoing expenses but not the cost of building the systems in the first place — an expense officials in those countries justify for environmental or other societal reasons. “In the countries we visited, the central government generally funds the majority of up-front costs . . . without the expectation that their investment will be recouped through ticket revenues,” the agency’s report said.
http://trains4america.wordpress.com/2009/04/19/cq-weekly-comments-on-political-and-economic-challents-for-high-speed-rail/ Susan Fleming, GAO’s director of physical infrastructure issues, summarized the report’s findings succinctly in her prepared testimony for an April 1 House Appropriations subcommittee hearing on high-speed rail. “In summary,” she wrote, “high speed rail does not offer a quick or simple solution to relieving congestion on our nation’s highways and airways. High speed rail projects are costly, risky, take years to develop and build, and require substantial up-front public investment as well as potentially long-term operating subsidies. Yet the potential benefits of high speed rail — both to riders and nonriders — are many.”
http://trains4america.wordpress.com/2009/04/20/gao-report-on-high-speed-rail/