Laserfiche WebLink
ANALYSIS <br />TJK.M used the total a.m. and p.m. peak hour vehicle trips for all calculations, because both peak <br />hours require specific parts of the total package of improvements at this intersection. Table 1 shows <br />the calculation of trips related to land use growth. In some instances the change in land use results in <br />a net reduction in trips. This is true for Traffic Analysis Zone (TAZ) 6 in the a.m. peak. In TAZ 6, <br />the current General Plan designation is industrial, but because of the new link, Westgate Parkway, <br />opening access between Williams Street and Davis Street, it is possible that future uses will become <br />more retail oriented due to the greatly improved freeway access. Table 2 contains factors that will <br />allow calculation of assessments for Davis and Doolittle improvements by TAZ should land uses <br />change from the assumptions in the current city traffic model. <br />Table 1: Travel Growth at Davis Street and Doolittle Drive <br /> Existing Future Difference TRIPS ENTERING DAVIS/DOOLITTLE <br /> Land use Land Use Difference <br />TAZ (ksf)'` (ksf) (ksf) Existing Future(From Model) (Future -Existing) <br /> a.m. .m. a.m. .m. a.m. .m. <br />all - - - 2640 2992 3279 3699 639 707 <br />1 1489.9 1773.1 283.2 33 80 42 83 9 3 <br />2 160.0 180.0 20.0 33 287 42 317 9 30 <br />3 2311.7 4040.3 1728.6 438 413 518 499 80 86 <br />4 2405.0 4176.4 1771.3 385 417 443 481 58 64 <br />5 1389.0 2090.0 700.9 191 377 197 386 6 9 <br />6 2772.7 407p.6 1297.9 64 91 52 138 -12 47 <br />7 Ai rport Expansion 332 614 446 716 114 102 <br />8 603.5 1159.1 555.6 31 75 78 172 47 97 <br />TOTALS 11131.8 17489.5 6357.6 1507 2354 1818 2792 314 388 <br />* ksf =gross floor area in thousands of square feet <br />Percent Contribution of Zones 1 to 8 to total growth in traffic a.m. Peak 49.1 <br />Percent Contribution of Zones 1 to 8 to total growth in traffic p.m. Peak 54.9% <br />TJKM determined that the entire increase in land use intensities is projected to occur with general <br />industrial. Note that the increase in land use intensity represents "buildout" as opposed to uses in <br />2025. The 2025 increases in intensity are only a fraction of the total buildout. The model trip <br />generation functions are based upon the levels of development (industrial) anticipated by 2025, not <br />buildout. The present $0.80/square foot DFSI rate was used as the basis for calculations of the per- <br />square-foot assessment in particular traffic analysis zones. The reason for the change in assessment is <br />due to the proportion of traffic growth attributed to each zone. The contributions are not equal, so the <br />allocation of assessment per square foot is not equal. The reason is that zones further away contribute <br />less traffic growth per addition square foot than zones close to the intersection. Table 3 shows our <br />proposed assessment per square foot for new development in each zone. Please note that the airport <br />expansion is shown as an aggregate assessment based upon the forecasted increase in trips through <br />the intersection originating or destined to the Oakland International Airport. <br />Table 3 also shows additional trips through the intersection in the a.m. and p.m. peak hours combined <br />that do not originate nor end in the proposed assessment area. <br />