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2. For 46,000 sq.ft. Shopping Centers in 5th Edition ITE Manual: <br />a. Average Weekday Trip Ends: <br />b. P.M. Peak Hour <br />Trip Ends: <br />C. Inbound (P.M. Peak Hour): <br />i. Westbound <br />(P.M. Peak <br />ii. Eastbound <br />(P.M. Peak <br />d. Outbound (P.M. <br />Peak Hour): <br />i. Westbound <br />(P.M. Peak <br />ii. Eastbound <br />(P.M. Peak <br />94.56/1,000 square feet <br />8.69/1,000 square feet <br />50% <br />Hour): 52.4% <br />Hour): 47.6% <br />50% <br />Hour): 47.6% <br />Hour): 52.4% <br />3. Peak Direction of SR 60, from 58th Avenue to 66th Avenue: <br />Westbound <br />4. Formula for Determining Number of Peak Hour/Peak Season/Peak <br />Direction Trips Generated: Total Square Footage x P.M. Peak <br />Hour Rate x Inbound P.M. Percentage x Inbound -Westbound <br />Percentage (46,000 x 8.69/1,000 x .5 x .524 = 105) <br />(trip distribution based on a Modified Gravity Model) <br />5. Formula for Determining Number of Average Weekday Trips <br />Generated: Total Square Footage $ Average Weekday Rate <br />(46,000 8 94.56/1,000 sq.ft. = 4,350) <br />6. Traffic Capacity on this segment of SR 60, at a Level of <br />Service "D": 2,840 peak hour/peak season/peak direction trips <br />7. Existing Traffic volume on this segment of SR 60: <br />1,288 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 land use <br />designation is 364. This was determined by multiplying the 36 <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 land use <br />designation is 4,350. This was determined by multiplying the <br />46,000 square feet of shopping center (most intense use), by ITE's <br />shopping center fitted curve factor of 94.56 Average Daily Trip <br />Ends/1,000 square feet. <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 SR 60 is westbound. <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 land use designation was <br />calculated to be 12. This was determined by multiplying the total <br />number of units allowed (36) under the existing land use <br />designation by ITE's factor of 1.01 p.m. peak hour trips/unit, to <br />determine the total number of trips generated. Of these trips, 65'k <br />(23) will be inbound and 35%- (13) will be outbound. Of the inbound <br />trips, 52.4* or 12 will be westbound. <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 proposed land use designation, the total <br />square footage of shopping center allowed under the proposed <br />amendment (46,000) was multiplied by ITE's factor of 8.69 p.m. peak <br />hour trips/1,000 square feet to determine the total number of trips <br />generated (400). Of these trips, 50sk (200) will be inbound and 50% <br />(200) will be outbound. Of the inbound trips, 52.4* or 105 will be <br />westbound. Therefore, the most intense use of the subject property <br />under the proposed land use designation would generate 93 (105 - 12 <br />= 93) more peak hour/peak season/peak direction trips than the 12 <br />that would be generated by the most intense use of the subject <br />property under the existing land use designation. <br />Using <br />a modified gravity model and a hand assignment, the peak <br />hour <br />/peak season/peak direction trips generated by the proposed use <br />were then assigned to impacted roads on the network. Impacted <br />roads are defined in section 910.09(4)(b)3 of the county's LDRs as <br />roadway segments which receive five percent (5%-) or more of the <br />project traffic or fifty (50) or more of the project trips, <br />whichever is less. <br />MARCH 189 1997 57 <br />BOOK 100 PAGE RJU <br />