Development of Statewide Truck Traffic Forecasting Method by Using Limited O-D Survey Data |
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Page 79
... calibration . Because of the limited amount of OD survey data available for calibration , the ' macro - scale " calibration is likely to lead to biased results . The test of bias involves the comparison of the GM trip tables for the ...
... calibration . Because of the limited amount of OD survey data available for calibration , the ' macro - scale " calibration is likely to lead to biased results . The test of bias involves the comparison of the GM trip tables for the ...
Page 80
... calibration is completed , a comparison is made between the average trip lengths for the OD TLF and partial GM TLF for each of the seven communities ... community OD mean X 2 GM mean X difference OD Sx3 GM Sx3 weight Beloit 62.0 min . 68.7 ...
... calibration is completed , a comparison is made between the average trip lengths for the OD TLF and partial GM TLF for each of the seven communities ... community OD mean X 2 GM mean X difference OD Sx3 GM Sx3 weight Beloit 62.0 min . 68.7 ...
Page 86
... Calibration community OD mean X GM mean X difference OD SX GM SX weight Beloit 62.0 min . 60.4 min . -3.2 % 43 33 0.076 Dane 67.6 64.1 -5.9 % 36 36 0.464 Brown 60.6 64.8 6.6 % 33 33 0.284 Wausau 56.9 67.9 19.3 % 36 35 0.119 Hartford ...
... Calibration community OD mean X GM mean X difference OD SX GM SX weight Beloit 62.0 min . 60.4 min . -3.2 % 43 33 0.076 Dane 67.6 64.1 -5.9 % 36 36 0.464 Brown 60.6 64.8 6.6 % 33 33 0.284 Wausau 56.9 67.9 19.3 % 36 35 0.119 Hartford ...
Contents
List of Tables | xi |
List of Figures | xvii |
List of Notations and Abbreviations | xxii |
13 other sections not shown
Common terms and phrases
16 selected 32 selected links 50 external stations 624 In-state Zones AADT attraction adjustment factors average trip length axle Beloit Calibration community check points Dane developed difference E-E trips estimate F factor friction factor curve GM forecasting GM trip table GM truck forecasting gravity model ground count growth rates heavy truck VMT link volumes locations LV/GC ratios Micro-scale Calibration OD TLF Origin-Destination overall partial GM TLF population Production adjustment Factor productions and attractions resulting RMSE Sax Trips scenario segment selected link analysis selected link based selected links calibration SELINK adjustments SELINK analysis shown in Figure shown in Table statewide GM TLF statewide GM trip survey data Three Trip Tables three trip types TLF curves traffic forecasting trip attractions trip distribution trip generation model truck forecasting model Truck Traffic Volume truck travel truck trip productions vehicle classification Volume Group Wisconsin WisDOT X1 Sax