SOURCES: U.S. Department of Transportation, Federal Highway Administration,
Toll Facilities in the United States: Bridges-Roads-Tunnels-Ferries, Washington,
DC: June 2001, available at http://www.fhwa.dot.gov/ohim/tollpage.htm
as of Feb. 18, 2002 and Yankeefoliage.com available at www.newengland.com/foliage/mostleaves.html
as of June 14, 2002.