NOTES: Based on data from the Truck Weight Study
that are collected by the states for varying time periods each year and are
not adjusted to typify annual averages. Loadings are based on equivalent single-axle loads, a standard unit of pavement damage based on the amount of
force applied to pavement by an 18,000-pound axle, which is roughly
equivalent to a standard truck axle.
Raw data are not available.
Totals may not add to 100 because of independent rounding.
SOURCE: U.S. Department of Transportation,
Federal Highway Administration, Highway
Statistics 2003 (Washington, DC: 2004),
table TC-3.
