About the Smart Work Zone Deployment Initiative
In 1999, the states of Iowa, Kansas, Missouri, and Nebraska created the Midwest
States Smart Work Zone Deployment Initiative (MwSWZDI). Through this pooled-fund
study, researchers investigate better ways of controlling traffic through
work zones. Their goal is to improve the safety and efficiency of traffic
operations and highway work. In 2001, Wisconsin joined the MwSWZDI consortium.
The project is part of the Transportation Pooled Fund Program,
Number TPF-5(081). The name has changed slightly by dropping "Midwest"
from the title. The project is now administered by Iowa State University's
Institute for Transportation. The lead
agency is the Iowa Department of Transportation.
During the first four years of MwSWZDI, a total of 35 technologies were deployed
and evaluated in the five states. Some of the technologies evaluated include
The Wizard Work Zone Alert and Information Radio. It
is designed to give drivers of heavy trucks enough advance warning of upcoming
delays at construction sites or incidents to enable them to stop safely
before encountering lines of halted vehicles.
The Portable Traffic Management System. Real-time traffic-responsive
information is provided to drivers through a variable message sign to advise
drivers of a work zone ahead and encourage them to divert to an alternate
route when there is congestion in the work zone.
Temporary Work Zone Rumble Strips. Several different
versions were evaluated.
D-25 Speed Advisory Sign System. The system detects the
presence of slow moving or stopped traffic on the approach to the work zone
and provides warning to drivers via speed messages displayed on trailer-mounted
variable message signs. The speed messages advise approaching motorists
of the traffic speed ahead.
Recently completed research
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