According to the report, if vehicle miles traveled increases at the rate of 1.4 percent per year, government entities will need to invest $166 billion annually. Another $13 billion will be needed annually for environmental mitigation, highway operations, safety programs, and security.

The report also indicates that if transit ridership grows 3.5 percent annually, (resulting in a doubling of ridership in 20 years), investment in public transportation will need to increase to $59 billion annually. In 2006, transit investment was $13.3 billion.

The full report can be accessed at: http://bottomline.transportation.org/.