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BooK 98 ry JE 6 36 <br />3. P.M. Peak Direction of Indian River Boulevard, from the Vero <br />Beach City Limits to 53rd Street: Northbound <br />4. Formula for Determining Number of Peak Hour/Peak Season/Peak <br />Direction Trips Generated: Number of Units X P.M. Peak Hour <br />Rate X Inbound P.M. Percentage X Inbound -Northbound Percentage <br />(165 X 1.01 X .65 X .75 = 81) <br />(trip distribution based on a Modified Gravity Model) <br />5. Formula for Determining Number of Average Weekday Trips <br />Generated: Number of Units X Average Weekday Rate <br />(165 X 10.1 = 1,667) <br />6. Traffic Capacity on. this segment of Indian River Boulevard, at <br />a Level of Service "D": 1,770 peak hour/peak season/peak <br />direction trips <br />7. Existing Traffic volume on this segment of Indian River <br />Boulevard: 348 peak hour/peak season/peak direction trips <br />The number of Average Weekday Trip Ends associated with the most <br />intense use of the subject property under the existing zoning <br />district is 1,252. This was determined by multiplying the 124 <br />units (most intense use) by ITE's single-family residential factor <br />of 10.1 Average Daily Trip Ends/unit. <br />The number of Average Weekday Trip Ends associated with the most <br />intense use of the subject property under the proposed zoning <br />district is 1,667. This was determined by multiplying the _165 <br />units (most intense use) by ITE's single-family residential factor <br />of 10.1 Average Daily Trip Ends/unit. <br />Since the county's transportation level of service is based on peak <br />hour/peak season/peak direction characteristics, the transportation <br />concurrency analysis addresses project traffic occurring in the <br />peak hour and affecting the peak direction of impacted roadways. <br />According to ITE, the proposed use generates more volume in the <br />p.m. peak hour than in the a.m. peak hour. Therefore, the p.m. <br />peak hour was used in the transportation concurrency analysis. The <br />peak direction during the p.m. peak hour on Indian River Boulevard <br />is northbound. <br />Given those conditions, the number of peak hour/peak season/peak <br />direction trips that would be generated by the most intense use of <br />the subject property under the existing zoning district was <br />calculated to be 61. This was determined by multiplying the total <br />number of units allowed under the existing zoning district (124) by <br />ITE's factor of 1.01 p.m. peak hour trips/unit, to determine the <br />total number of trips generated. Of these trips, 65k (81) will be <br />inbound and.35k (44) will be outbound. Of the inbound trips, 75% <br />or 61 will be northbound. <br />To determine the number of peak hour/peak season/peak direction <br />trips that would be generated by the most intense use of the <br />subject property under the requested zoning district, the total <br />number of units allowed under the proposed district (165) was <br />multiplied by ITE's factor of 1.01 p.m. peak hour trips/unit to <br />determine the total number of trips generated (167). Of these <br />trips, 650 (109) will be inbound and 35% (58) will be outbound. Of <br />the inbound trips, 75% or 82 will be northbound. Therefore, the <br />most intense use of the subject property under the proposed zoning <br />district would generate 21 more peak hour/peak season/peak <br />direction trips than the 61 that would be generated by the most <br />intense use of the subject property under the existing zoning <br />district (82 - 61 = 21). <br />Using a modified gravity model and a hand assignment, the peak <br />hour/peak season/peak direction trips generated by the proposed use <br />were then assigned to impacted roads on the network. Impacted <br />JULY 239 1996 <br />