The trends of growing traffic, increased road work, and
public frustration with work zones have contributed to the
growing work zone safety concerns on construction workers and
the traveling public. Traffic delays and vehicle crashes in
work zones have resulted in significant economicconsequences.
Key Facts about Highway Work Zones
zones are one of the most dangerous elements of the
transportation network, representing over 1000 fatalities
and 50,000 injuries annually.
- One third of the roads in urbanized areas in the United
States are traveled under congested conditions and
severe delays often occur due to work zones [FHWA, 2005].
- Much of
the Dwight D. Eisenhower National System of Interstate
and Defense Highways is more than 30 years old [FHWA
the year 2001, of the 24,606 miles of federal aid
roadway projects underway, 85 percent of the miles were
for system preservation projects [FHWA 2001].
- In the year 2000, more than 81 percent of highway capital
expenditures were allocated to system preservation,
expansion, and enhancement all involving active work zones
on existing roads with traffic present [FHWA 2003].