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exist. This pilot test was conducted to assist state DOTs in identifying what work zone performance ...
exist. This pilot test was conducted to assist state DOTs in identifying what work zone performance
measures can and should be targeted, what data they will need to collect to compute those measures, and
what methods exist to obtain that data. Work zone activity and traffic data from five work zone projects
were gathered and analyzed. Multiple data sources and collection methods were examined and utilized to the
extent available at each project. These sources were field crew personnel manually documenting queue
presence, length, and duration; traffic surveillance data from a transportation management center or from
portable work zone ITS; and third-party probe vehicle data (in this test, large truck speed data obtained via
the FHWA Office of Freight Management).
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