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Pages 103-106

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From page 103...
... Summary of Findings 105   • DOTs have generally not experienced issues with cellular connectivity, possibly because smart work zone technologies are often implemented in populated areas with sufficient cellular coverage. State DOT Data Management Practices for Smart Work Zone Technologies • The use of work zone data collection technologies appears to be growing, as they are employed by 33% of DOTs and planned for future implementation by an additional 37% of DOTs.
From page 104...
... 106 Use of Smart Work Zone Technologies for Improving Work Zone Safety correlations between smart work zone technologies and crash reductions are found to a lesser extent in existing literature, with QWSs shown to reduce crashes by 15% to 53%. • Experimental studies of work zone intrusion alarm systems have shown mixed results, and limitations of some of these systems have been documented.
From page 105...
... 107   AASHTO. AASHTO Work Zone Performance Measures Survey, American Association of State Highway Transportation Officials (AASHTO)
From page 106...
... 108 Use of Smart Work Zone Technologies for Improving Work Zone Safety Bham, G

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