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B. Nonresidential Trip Generation Data The table below summarized the employee trips and building area ratios. These are used to determine current and future trips generated as a result of nonresidential development. Nonresidential Vehicle Trip End Generation City of Roseville Fiscal Analysis Land Use Wkdy Trip Ends Wkdy Trip Ends (ITE code) Per 1,000 Sq Ft (1) Per Employee (1) Commercial/Shopping Ctr (820) 50 KSF GLA 87.31 na 100 KSF GLA 68.17 na 200 KSF GLA 53.22 na General Office (710) 10 KSF GFA 22.64 5.16 25 KSF GFA 18.31 4.53 50 KSF GFA 15.59 4.11 Industrial General Light Industrial (110) 6.97 3.02 Industrial Park (130) 6.96 3.34 Manufacturing (140) 3.82 2.10 Warehousing (150) 4.96 3.89 = used in this analysis (1) Based on Information provided from Trip Generation, Institute of Transportation Engineers, 1997. The table below summarizes the 1999 nonresidential vehicle trips on an average weekday in Roseville. The gross floor areas are multiplied times the average weekday trip ends and by trip factors to determine the total average vehicle trips for each nonresidential land use. Total nonresidential vehicle trips on an average weekday in the City amount to 170,457. Trip factors are used to avoid double counting each trip at both the origin and destination point. (A trip end represents an origination or destination point. as if a traffic counter was placed on every driveway.) For all non-retail development, the trip factor is 50 percent. For retail development the trip adjustment factor is 29 percent. The trip factor is less than 50 percent because retail uses attract vehicles as they pass by on arterial and collector roads. For example. when someone stops at a convenience store On the way home from work, the convenience store is not their primary destination. The Trip Generation manual indicates that on average 41 percent of the vehicles entering shopping centers that have 100,000 square feet of floor area are passing by on their way to some other primary destination. The remaining 59 percent of attraction trips have the shopping center as their primary destination. Because attraction trips are half of all trips. the trip adjustment factor for large size Retail/Shopping Centers is 59 percent multiplied by 50 percent, or about 29 percent of the trip ends. Page 44 Tischler & Associates, Inc.