Estimating the Off-Network Presence of STAA Dimensioned Vehicles on North Carolina Roadways Using CMV Crash Data, 2001-2005

A recent study by researchers at NC State University’s Institute for Transportation Research and Education (ITRE) has shown fatal crashes involving combination unit trucks (CUT) in NC for 2005-2009 were more frequent on non-Interstate roadways than on Interstate roadways.  While small carriers (those operating fewer than 10 power units) constituted only 17% of all fatal CUT-involved crashes on Interstate roads, small carriers constituted 36% of all fatal CUT crashes on non-interstate roads. Read Full Report

Estimating the Off-Network Presence of STAA Dimensioned Vehicles on North Carolina Roadways Using CMV Crash Data, 2001-2005

The study addresses the presence of commercial motor vehicle (CMV) involved crashes in North Carolina which took place off (i.e., beyond the 3-mile buffer) the truck network established by the Surface Transportation Assistance Act (STAA). All crash data were obtained from the North Carolina Department of Transportation's Traffic Engineering Accident Analysis System (TEAAS). The data used in the study were for the period, CY2001-CY2005. Since it was not possible to reliably differentiate STAA 'dimensioned' vehicles using the trailer length field of the DMV-349 crash report form (due to large number of inaccurate or missing data), the dataset used for the analysis is confounded by the presence of trailers with trailer lengths (e.g., 48 ft) permissible 'offnetwork.' Read Full Report

I-95 Corridor Study

This study, completed in August, 2004, presents map sheets which contain geospatial, graphical, and tabular data, as well as summary reports, representing heavy truck crashes on Interstate Highway 95 in North Carolina between January 1, 2001 and December 31, 2003. The study was undertaken by the GIS group of the Institute for Transportation Research and Education (ITRE) at North Carolina State University at the request of the North Carolina State Highway Patrol.

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US Highway 74 Corridor Study

This study, completed in April, 2004, presents map sheets and selected tabular data representing heavy truck crashes along a specified corridor of US Highway 74 in Mecklenburg and Union Counties in North Carolina between January 1, 2001 and December 31, 2003.

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