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CASE STUDY: Kentucky Horizontal Curves

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Recognizing that nearly 70 percent of their roadway crashes were related to road departure Kentucky identified a need to address road departure accidents. . Roadway departure crashes are a priority for the Kentucky Transportation Cabinet (KTC) because they have found that these crashes tend to lead to injuries or fatalities. If a half-mile roadway section had eight or more wet weather crashes over a five-year period, the KTC proactively applied a High Friction Surface treatment if the pavement was in a good condition. All of the locations used calcined bauxite for the aggregate.

CASE STUDY: Florida Interchange Ramps and Intersection

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The Florida Transportation Department (FDOT) has installed a number of High Friction Surface treatments around the state to date. Among the sites with HFST installed are the northbound interchange ramp at Royal Palm Boulevard and I-75 (Broward County), the I-595 interchange ramp to the Ft. Lauderdale airport, and the west leg (downgrade) of Sheridan St. at the North 29th Ave. 

CASE STUDY: Northern California US 199-Del Norte County

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Over the last decade, a horizontal curve within the parks’ limits experienced a high frequency of wet crashes. This curve is located on US 199, a two-lane, rural highway in Del Norte County, approximately one mile east of the South Fork Road intersection. 

CASE STUDY: Bellevue, Washington Downgrade Intersection Approach

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The Forest Drive westbound approach, at its intersection with Cole Creek Parkway, regularly had vehicles sliding down the hill during icy weather. In 2011, the average daily traffic at the approach was 4,941 vehicles. In an effort to combat the problem, a High Friction Surface treatment was applied on this approach in 2004.

FDOT adopts “categories” for MASH implementation

Third state transportation department to release implementation plans on adapting to MASH-16 standards

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The Florida Department of Transportation (FDOT) has adopted the four categories used in the National Cooperative Highway Research Program (NCHRP)-350 into its state plan for Manual for Assessing Safety Hardware-16 implementation. 

ATSSA stresses importance of standardized TCD regulations and roadside infrastructure at FHWA National Dialogue on Highway Automation series

Workshops provide opportunities for transportation industry members to listen, engage, inform, and develop solutions to advance toward highway automation

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ATSSA is vocalizing member needs and concerns by participating in a series of meetings and workshops designed to open discussion between stakeholders within the transportation industry on key issues and challenges related to highway automation.