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r BOOK , 99 .o.,t.737 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 58th Avenue 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 property under the existing land use designation was calculated to be 41. This was determined by multiplying the total number of units allowed (120) under the existing land use designation by ITE's factor of 1.01 p.m. peak hour trips/unit, to determine the total number of trips generated. Of these trips, 65% (79) will be inbound and 35% (42) will be outbound. Of the inbound trips, 52.5% or 41 will be southbound. To determine the number of peak hour/peak season/peak direction trips that would be generated by the most intense use of the subject property under the proposed land use designation, the total square footage of shopping center allowed under the proposed amendment (150,200) was multiplied by ITE's factor of 5.66 p.m. peak hour trips/1,000 square feet to determine the total number of trips generated (850). Of these trips, 50% (425) will be inbound and 50% (425) will be outbound. Of the inbound trips, 52.51 or 223 will be southbound. Therefore, the most intense use of the subject property under the proposed land use designation would generate 182 (223 - 41 = 182) more peak hour/peak season/peak direction trips than the 41 that would be generated by the most intense use of the subject property 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. The traffic capacity for the segment of 58th Avenue adjacent to this site is 1,890 trips (peak hour/peak season/peak direction) at Level of Service (LOS) "D", while the Total Segment Demand (existing traffic volume + vested traffic volume) on this segment of 58th Avenue is 1,178 trips (peak hour/peak season/peak direction). The additional 223 peak hour/peak season/peak direction trips created by the most intense use of the subject property under the proposed amendment would increase the Total Segment Demand peak hour/peak season/peak direction trips for this segment of 58th Avenue to approximately 1,401. Based on the above analysis, staff determined that 58th Avenue and all other impacted roads can accommodate the additional trips without decreasing their existing levels of service. The table below identifies each of the impacted roadway segments associated with the proposed land use designation. As indicated in this table, there is sufficient capacity in all of the segments to accommodate the projected traffic associated with the request. NOVEMBER 12, 1996 42