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L <br />Highway and Transportation Officials (AASHTO) Geometric Design of Highways and <br />Streets, typically referred to as the AASHTO "green book". The AASHTO "Green Book" <br />provides the national guidelines to which State Transportation Departments and local <br />municipalities establish their roadway design criteria. <br />According to J3 Engineering, the applicant's civil engineer, AASHTO describes sight <br />triangles as a specified area along intersection approach legs and across their included <br />corners that should be clear of obstructions that might block a driver's view of potentially <br />conflicting vehicles, pedestrian and cyclists. <br />J3 analyzed the AASHTO method of calculating sight triangle geometry and applied the <br />results to the intersection to provide an example of the potential reduction that could be <br />yielded verses the City's current method. The results are provided below (A detailed <br />analysis is provide in the J3 letter dated May 19, 2011). <br />SITIO CASE B2-RIQIIT TURNS I'ROM THE MINOR ROAD (I AYLIX AVE) <br />BUILDING ENVELOPE RIGHT TURN SIGHT <br />(TYR.) DISTANCE TRIANGLE <br />TRACT N <br />AASHTO CASE RI -LEFT TURNS FROM THE MINOR ROAl) IKAYLIX AVE) <br />RIGHT TURN SIGHT <br />DISTANCE TRIANGLE J I <br />EXISTING SIGHT <br />AREA WAIVER REQUEST <br />(TYP.) <br />1 <br />PASCHAL DRIVE <br />LEFT TURN SIGHT <br />DISTANCE TRUNGUE <br />The resulting AASHTO compliant design eliminates the need for the vision clearance area <br />at the Paschal Drive and Kaylix Avenue intersection. <br />The Planning Department requested the City of Louisville Public Works Department review <br />