This interim report to Congress summarizes the progress and initial results of the Federal Highway Administration's (FHWA) and the four pilot communities' participation in the Nonmotorized Transportation Pilot Program (NTPP) from its inception through May 2007. Section 1807 of the Safe, Accountable Flexible Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU), P.L. 109-59, established the NTPP in August 2005. Over the span of 4 years, the legislation provides $25 million in contract authority for each of the NTPP's four pilot communities (Columbia, Missouri; Marin County, California; Minneapolis, Minnesota; and Sheboygan County, Wisconsin) "to construct ... a network of nonmotorized transportation infrastructure facilities, including sidewalks, bicycle lanes, and pedestrian and bicycle trails, that connect directly with transit stations, schools, residences, businesses, recreation areas, and other community activity centers."