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A traffic impact analysis shall be required for site plan applications where the proposed development will gener- ate/attract one thousand (1,000) trips per day or more; or developments where the proposed use is located at a critical transportation location, as determined by the Director of Public Works. The applicant will be notified at the pre -application stage if a traffic impact analysis will be required, provided sufficient information is available for County staff to determine whether or not the trip generation threshold will be surpassed. The approving body may waive this requirement based on a determination by the Director of Public Works that the proposed use will not generate any adverse off-site impacts warranting corrective measures by the applicant or that sufficient data is already available for the traffic impacts to be adequately assessed. Applicable Trip Generation Rates. Trip generation will be calculated based upon actual studies performed for or by Indian River County, as available or the latest data contained within the Institute of Transportation Engineers' Trip Generation liar,ual, current edition In the event that suitable data are not available for the proposed land use(s), the Public Works Director must approve estimates prior to acceptance of traffic impact analysis results. Level of Service Standards. No proposed development shall be approved which reduces the Level of Service (L.O.S.) on r,ajor thoroughfares and/or intersections below L.O.S. "C" on an average annual basis, or below L.O.S. "D" during either peak hour or peak season conditions. Level of Service standards shall be based on definitions established within the "Highway Capacity Manu- al", (current edition), by the Highrnay Research Board. Preparation of Traffic Impact Analysis. The analysis shall state all data sources and the methodolo- gy utilized in the study. County c0, -rents on the analysis will be provided in a written form. The applicant will then have the opportunity to incorporate necessary revisions prior to submitting a final report. Contents of Traffic Impact Analysis. i. Study Area Boundaries. The boundaries of the transpor- tation impact areas shall vary based on the peak hour trips generated by the proposed development. The study area shall include all arterial and collector roadways as provided below: Peak Hour Trips Study Area Radius less than 500 1/2 mile 500 to 1,000 1 mile over 1,000 3 miles The study area radius shall be measured from the boundaries of the property being developed. Projected impact on barrier island bridges shall be included in the study area report. ii. Existingand Proposed Land Uses. The traffic impact analysis shall also include a description of the existing and proposed land uses on the site. The land uses of adjacent properties within five hundred (500) feet, including vacant land, shall also be identified. -16-