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600K ,l V �Auc-. o i�m0 a 5. Number of Average Weekday Trips Generated: 424 5,469 6. Traffic Capacity on This Segment of U.S. 1, at a LOS 2,650 peak hour/peak 2,650 peak hour4mak "D" seaion/peak direction season/peak direction trips trips 7. Total Segment Demand (Existing Volume+ Vested 1,272 peak/houv*ak 1,272 peak/houvJ=k Volume) on This Segment of U.S. 1 season/peak direction season/peak direction trips trips The number of Average Weekday Trip Ends associated with the most intense use of the subject properties under the existing land use designation is 424. This was determined by multiplying the 42 units (most intense use) by ITE's single-family residential factor of 10.1 Average Daily Trip Ends/unit. The number of Average Weekday Trip Ends associated with the most intense use of the subject properties under the proposed land use designation is 5,469. This was determined by multiplying the 70,700 square feet of shopping center use (most intense use) by ITE's shopping center fitted curve factor of 77 Average Daily Trip Ends/1,000 square feet. Since the county's transportation level of service is based on peak hour/peak season/peak direction characteristics, the transportation concurrency analysis addresses project traffic occurring in the peak hour and affecting the peak direction of impacted roadways. According to ITE, the proposed use generates more volume in the p.m. peak hour than in the a.m. peak hour. Therefore, the p.m. peak hour was used in the transportation concurrency analysis. The peak direction during the p.m. peak hour on U.S. 1 is southbound Given those conditions, the number of peak hour/peak season/peak direction trips that would be generated by the most intense use of the subject area under the existing land use designation was calculated to be 16. This was determined by multiplying the total number of units allowed (42) under the existing land use designation by IIE's factor of 1.01 p.m. peak hour trips/unit, to determine the total number of trips generated Of these trips, 65% will be inbound and 35% will be outbound. Of the inbound trips, 53% or 15 will be northbound To determine the number of peak hour/peak season/peak direction trips that would be generated by the most intense use of the subject area under the proposed land use designation, the total square footage of shopping center allowed under the proposed amendment (70,700) was multiplied by ITE's factor of 7.05 p.m. peak hour trips/1,000 square feet to determine the total number of trips generated (498). Of these trips, 92% or 458 trips are new trips, which are due to the proposed land use designation. From the new trips, 48% (220) will be inbound and 52% (238) will be outbound. Of the outbound trips, 53% or 126 trips will originate from the north of the subject area Therefore, the most intense use of the subject area under the proposed land use designation would generate 111 (126 - 15 = 111) more peak hour/peak season/peak direction trips than the 15 that would be generated by the most intense use of the subject area under the existing land use designation. Using a modified gravity model and a hand assignment, the peak hour/peak season/peak direction trips generated by the proposed use were then assigned to impacted roads on the network. Impacted roads are defined in section 910.09(4)(b)3 of the county's LDRs as roadway segments which receive five percent (5%) or more of the project traffic or fifty (50) or more of the project trips, whichever is less. Capacities for all roadway segments in Indian River County are calculated and updated annually, utilizing the latest and best available peak season traffic characteristics and applying Appendix G methodology as set forth in the Florida Department of Transportation Level of Service Manual. Available capacity is the total capacity less existing and committed (vested) traffic volumes; this is updated daily based upon vesting associated with project approvals. April 28, 1998 54