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<br />Pleasanton Commuter Trip Distribution <br /> <br />2003 Pleasanton Commute Survey as well as the Census Journey to work has been <br />incorporated into the traffic forecast model. This data is used to ensure that the <br />forecasting model route the appropriate proportion of Pleasanton resident <br />commuters to the job locations in and outside of Pleasanton as well as those <br />commuters to Pleasanton as identified in the surveys. Use of this survey data <br />better guides the traffic forecast model in projecting Pleasanton Gateway traffic <br />patterns. <br /> <br />In previous versions of the City of Pleasant on travel demand model, all TAZs within <br />the City of Pleasanton were factored to reflect similar commute patterns, regardless <br />of where the TAZ was located. This current version of the travel demand model <br />factors commute trips by Census Tract as well as overall to more accurately reflect <br />travel to and from different parts of the City. The results of the model distribution <br />validation are shown in the following tables. <br /> <br />Overall Citvwide Work Trio Distribution <br /> Baseline Baseline <br /> Baseline Employee 2006 Model Resident 2006 Model <br />All Work Trios 2006 Model Survey Attractions Survey Productions <br />Pleasanton 1 18.2% 20.8% 28.2% 32.4% <br />Dublin 2 3.4% 5.1% 5.5% 5.0% <br />Livermore 3,9 20.0% 24.1% 6.0% 13.0% <br />1-580 West 4 20.7% 17.5% 18.8% 15.6% <br />1-580 East 5,8 14.0% 10.7% 0.8% 0.7% <br />1-680 North 6,10,11 15.8% 15.2% 14.2% 10.1% <br />1-680 South 7,12 7.9% 6.7% 22.5% 18.2% <br />BART 13 0.0% 0.0% 4.0% 5.0% <br /> 100.0% 100.0% 100.0% 100.0% <br /> <br />H 'nd B' PrkWrkT' <br /> <br />aCIe a uSlness a 0 nps <br /> Baseline <br />Hacienda CTPP Tract 2006 Model <br />Business Park 450722 Attractions <br />P1easanton 16.4% 17.5% <br />Dublin 4.6% 5.8% <br />Livermore 10.0% 14.4% <br />1-580 West 31.4% 27.3% <br />1-580 East 9.4% 7.2% <br />1-680 North 23.0% 23.2% <br />1-680 South 5.3% 4.5% <br />BART NA NA <br /> 100.0% 100.0% <br /> <br />Turning Movement Forecasts <br /> <br />The approach volume estimates produced by the traffic forecasting model are saved <br />for each study intersection in the City. Working from existing traffic counts and <br />turning movement patterns, a "Furness" process is then used to growth factor <br />existing turning movement counts at each intersection to produce future turning <br />movements at each intersection. <br /> <br />This procedure first adjusts the model predicted intersection approach volumes for <br />any remaining differences between the validated model and the actual Year 2000 <br />turning counts. The corrected approach volume forecasts are then used to growth <br />factor up the Year 2000 turning count. A Furness balancing process is then used to <br />make sure that the model predicted approach volumes (after correction) are <br />preserved in the new turning movement forecast. The analyst reviews these <br />forecasts and manually intervenes where the Furness process yields unrealistic <br />results (manual intervention is typically required where the street configuration <br />has changed between when the actual count was made and the future year of the <br />model run). <br /> <br />City of Pleasanton <br />Travel Demand Forecasting and Micro-Simulation Models <br /> <br />Page 13 <br />January 23,2007 <br />