Figure 1. Low volume road with traffic-induced pavement distress during
spring thaw.
damage. While the economic impact on selected
LOAD RESTRICTION SURVEY
industries that rely on continuous trucking is sig-
nificant, two or three trucks on one spring day
During the spring of 1997, a 19-question survey
might cause the equivalent damage of design traf-
on load restriction practices was distributed to 45
fic during the entire year, if load restrictions are
state DOTs. Surveys were not sent to Hawaii,
not imposed. This appreciably increases road
Florida, Alabama, Mississippi, and Louisiana be-
maintenance and pavement reconstruction costs.
cause of their warm climates. Several surveys were
2
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