Travel Demand Model - OKI

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OKI/MVRPC Travel Demand Model – Version 6.0Table 2-9 OKI/MVRPC Model K-FactorsTripTrip Interchange (Origin/Destination)Purpose Ham/CBD Ham/N.KY N.KY/Ham OKI/MVRPC MVRPC/OKI MG/Mia Mia/MGHBWPeak 1.2 0.3 0.8 0.4 0.4 0.5 0.5Off Peak 0.5 0.8 0.4 0.4 0.5 0.5HBOPeak 0.8 0.2 0.3 0.4 0.4 0.25 0.25Off Peak 0.7 0.2 0.3 0.4 0.4 0.25 0.25NHBPeak 0.6 0.4 0.5 0.5 0.25 0.25Off Peak 0.4 0.4 0.5 0.5 0.25 0.25Table 2-10 K-factor DistrictsDistrict No. Counties Traffic Analysis Zones1 Cincinnati CBD 252-2952 Hamilton 1-251,296-690,1588,1601,16023 Clermont 1128-1254,16004 Butler, Warren, Dearborn 691-1127,1551-1587,1589-1599,16085 Boone, Campbell, Kenton 1255-1550,1603-16076 Montgomery, Greene 1609-21367 Greene 2137-23188 Miami 2319-24259 External Stations 2426-25312.7 External-Internal Trip Distribution CalibrationThe external-internal trip distribution model is a gravity model. Unlike the person trip models,the EI gravity model uses off-peak travel times as the measure of impedance. Figure 2.8 showsthe observed and estimated trip length distribution functions. The estimated average trip lengthis 31.2 minutes, which is within 5% of the average observed trip length (29.9 minutes). Theobserved trip table was derived from the 1995 Cordon Survey. Please refer to Part III (TripGeneration) of the Model Development Report for a description of the survey processing.Figure 2-8 Trip Length Frequency Distribution Functions, External-Internal Trips3.0%2.5%2.0%Est % Obs %1.5%1.0%0.5%0.0%0 10 20 30 40 50 60 70 80 90 100Travel Time (min)Trip Distribution - Gravity Model Calibration 17
OKI/MVRPC Travel Demand Model – Version 6.03. Gravity Model ApplicationThis section presents the results obtained when applying the calibrated friction and k factors tothe OKI/MVRPC model. The average trip lengths obtained during model application aresomewhat different than those reported in Section 2 due to two reasons:• Model application includes the entire consolidated region, while model calibration wasbased on the OKI region only.• The application of the trip distribution model is based on estimated trip productions andattractions, while the calibration of the model is based on observed trip productions andattractions.Section 3.1 presents a comparison of observed and estimated trip length frequency distributionsfor the OKI region, with the estimated distributions taken from the model application results.This comparison is referred to as the distribution model validation. Section 3.2 presents averagetrip length summaries for each sub-region. While there are no data to check the average triplengths in the MVRPC region, these results are nevertheless examined for reasonableness.3.1 Trip Distribution Model ValidationFigures 3.1 to 3.6 show comparisons of the observed and estimated trip length frequencydistribution functions for each trip purpose and time period, for trips that start and end in theOKI Region only. The estimated functions closely follow the observed functions, confirming thatthe trip distribution models are able to reproduce the observed data in model application. Table3.1 below shows the forecasting error obtained for the average trip length (in logsum units). Theerrors are small and acceptable, and moreover the estimated trip lengths obtained in modelapplication are similar to those obtained in model calibration, as expected.Table 3-1 Average Trip Length in the OKI Region (Logsums), Model ApplicationResultsTripAverage Trip Length (Logsums)Intrazonal TripsPurpose Observed Estimated % Error Observed EstimatedHBWPeak 274.1 276.7 0.9% 2.3% 1.9%Off Peak 248.8 249.0 0.1% 4.2% 3.4%HBOPeak 114.9 120.9 5.2% 8.2% 5.3%Off Peak 144.2 147.4 2.2% 6.4% 5.7%NHBPeak 241.7 241.7 0.0% 18.6% 16.1%Off Peak 239.0 237.9 -0.5% 17.9% 18.5%Trip Distribution - Gravity Model Application 18
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APPENDIX F • TRAVEL DEMAND MODEL
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OKI/MVRPCTravel Demand ModelVersion
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Table of ContentsPart IPart IIPart
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OKI/MVRPC Travel Demand Model - Ver
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Table A.1 (cont.)Zone System Equiva
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Table A.2Zone System Equivalences -
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Table A.3Zone System Equivalences -
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Table B.1External Stations in the C
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Table B.1External Stations in the C
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User Documentation forAutomated Acc
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[Transit Format][New Link Attribute
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distance for each centroid or node.
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Figure 1Example Control File for th
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LinkType = 99VolumeDelay = 99Lanes
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NetworkScale = 1.0 Scale factor to
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Figure 4Example Output from DRVLINK
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Appendix ASample EMME/2 Transit Lin
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Appendix FTravel Demand ModelingTec
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Index of TablesTable 2-1 Socio-Econ
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Page 189 and 190: Index of TablesTable 2-1 Trip Lengt
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NORTH-SOUTH TRANSPORTATION INITIATI
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Run # 63: Start with 7.17 estimatio
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Run # 67:Split parking cost from ot
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Run # 70a:Include zero-auto segment
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Run # 71c:Repeat #71a with zero aut
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Run # 71g:Repeat #71d with wait tim
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Run # 73:Include residential densit
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Run # 76:Nest: auto vs transitVaria
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Run # 79:Repeat #72 with zero autos
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Run # 80:Nest: auto vs. all othersV
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Run # 82:(071h) nested: auto vs tra
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Run #3VariableModeDrive Shared Ride
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Run #8VariableModeDrive Shared Ride
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Run #12 test: make aoc=10.5 instead
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Run #29VariableModeDrive Shared Rid
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Run #33VariableModeDrive Shared Rid
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Run #37vot constrained to $7.00Vari
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Run #30bSame as #30a, combine cost
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Run #140 (same as run #40)vot const
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Run #140b (same as run #40)vot cons
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Run #141avot constrained to $3.00 &
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Run #141cvot constrained to $3.00 &
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Run # 1:Base RunVariablesModesDA Sh
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Run # 5:Base Run with walk time set
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Part VITRIP ASSIGNMENT ANDVALIDATIO
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Index of TablesTable 2-1 Average Ve
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VOBFigure 4-8 Screenline Location -
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2759OKI/MVRPC Travel Demand Model -
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Table of Contents1. Introduction...
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Appendix FTravel Demand ModelingTec
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Table of Contents1. Introduction...
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2. Surveys and Other Datasets2.1 OK
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Table 2-1 OKI Home Interview Survey
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Table 1-4 On-Board Survey Data Dict
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2.3 External Station Survey - Conso
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2.4 External Cordon Survey - Consol
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2.5 External-External Trip Table fr
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2.20 Screenline Shape File - Screen
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