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Indian River County 1 Impact Fee Update Study <br />Florida Studies Trip Characteristics Database <br />The Florida Studies Trip Characteristics Database includes over 200 studies on 40 different <br />residential and non-residential land uses collected over the last 20 years. Data from these <br />studies include trip generation, trip length, and percent new trips for each land use. This <br />information has been used in the development of impact fees and the creation of land use plan <br />category trip characteristics for communities throughout Florida and the U.S. <br />TOA estimates trip generation rates for all land uses in a transportation impact fee schedule <br />using data from studies in the Florida Studies Database and the Institute of Transportation <br />Engineers' (ITE) Trip Generation reference report (9th edition). In instances, when both ITE Trip <br />Generation reference report (9th edition) and Florida Studies trip generation rate (TGR) data are <br />available for a particular land use, the data is typically blended together to increase the sample <br />size and provide a more valid estimate of the average number of trips generated per unit of <br />development. If no Florida Studies data is available, only TGR data from the ITE reference report <br />is used in the fee calculation. <br />The trip generation rate for each respective land use is calculated using machine counts that <br />record daily traffic into and out of the site studied. The traffic count hoses are set at entrances to <br />residential subdivisions for the residential land uses and at all access points for non-residential <br />land uses. <br />The trip length information is obtained through origin -destination surveys that ask respondents <br />where they came from prior to arriving at the site and where they intended to go after leaving <br />the site. The results of these surveys were used to estimate average trip length by land use. <br />The percent new trip variable is based on assigning each trip collected through the origin - <br />destination survey process a trip type (primary, secondary, diverted, and captured). The percent <br />new trip variable is then calculated as 1 minus the percentage of trips that are captured. TOA <br />has published an article entitled, Measuring Travel Characteristics for Transportation Impact <br />Fees, ITE Journal, April 1991 on the data collecting methodology for trip characteristics studies. <br />Tindale -Oliver & Associates, Inc. Indian River County <br />June 2014 <br />8-4 Impact Fee Update Study <br />Zoo <br />