NOTES: Because of the transition to a new
indicator for pavement condition beginning with U.S. Department of
Transportation, Federal Highway Administration (FHWA) data published in 1993,
comparisons between pre-1993 data and 1993 and later data are difficult. Data
are for the 50 states and the District of Columbia.
SOURCE: U.S. Department of Transportation,
Bureau of Transportation Statistics, National
Transportation Statistics 2002 (Washington,
DC: 2002), table 1-26, also available at http://www.bts.gov/, as of April
2003.
