SECTION 7: Project Examples of HFST Application
This section of the document provides some specific examples where an HFST was placed to reduce wet-weather roadway departures and crashes. A total of four projects are included in this section.
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Location 1: Madison County, Kentucky; KY-21, MP 6.7-6.9 Installation: November 2010 Two horizontal curves were located within these mileposts. Prior to the HFST installation, nine wet weather crashes and eight dry weather crashes were recorded at this location over 3 years. After the installation, over a period of 2.9 years, one wet weather crashes and three dry-weather crashes were recorded. |
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Location 2: Madison County, Kentucky; KY-21, MP 11.3-13.5 Installation: April 2011 The roadway within this segment was divided into five sections, each containing a horizontal curve. During the 3 years prior to the HFST installation, 37 wet-weather crashes and 6 dry-weather crashes were recorded. After the treatment, over a period of 2.5 years, 4 wet-weather crashes and 10 dry weather crashes were recorded. |
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Location 3: Fayette County, Kentucky; Ramp from I-75/I-64 to US-68/US-27 Installation: November 2010 An HFST was placed on the ramp from I-75/I-64 to US-68/ US-27. The 3-year before-treatment period included 17 wet weather and 8 dry crashes in the ramp area. The HFST was placed from the guardrail to the edge strip along the shoulder. During the 3-year post-treatment period only one dry weather crash has been reported. |
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Location 4: Fayette County, Kentucky; KY-922; MP 7.8 to 7.9 Installation: November 2010 During the 3 years prior to the HFST installation, eight wet weather crashes and five dry-weather crashes were recorded. After the treatment, over a period of 3 years, one wet-weather crash has been recorded. |
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