The design of a comprehensive microsimulator of household vehicle fleet composition, utilization, and evolution

TABLE 2a Estimates of the Vehicle Type Choice Component of Vehicle Selection Module (Continued)

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• Variables  Replaced Vehicle Characteristics Compact Car
• TABLE 2b Estimates of the Vehicle Usage Component of Vehicle Selection Module
• TABLE 3 Disaggregate Measures of Fit for the Validation Sample
• Copula based joint model predictive likelihood

TABLE 2a Estimates of the Vehicle Type Choice Component of Vehicle Selection Module (Continued) Variables  Replaced Vehicle Characteristics Compact Car Car SCU SUV Van Pickup Gasoline No vehicle -- -- -- -- -- -- --   -- -- -- -- -- -- -- CC 0.5665 -1.5864 -0.9648 -1.3750 -- -2.1573 1.5717   (2.17) (-8.82) (-2.60) (-4.44) -- (-6.32) (6.06) Car -- 1.9106   0.9306 1.1680 -0.7985 --   -- (12.55)   (4.41) (3.86) (-2.90) -- SCU -- -- 2.5700 -- -- -- 0.5343   -- -- (9.41) -- -- -- (3.20) SUV -- -- -- 2.6388 1.6229 -- --   -- -- -- (12.72) (5.97) -- -- Van -- -- --   4.7040 -- --   -- -- --   (13.34) -- -- Pickup -- -0.4319 -- 1.3940 -- 4.3382 -0.8290   -- (-1.64) -- (5.06) -- (15.92) (-4.47) Gasoline -0.4069 -- -0.6777 -- -- -1.14 --   (-3.46) -- (-3.11) -- -- (-5.24) -- Flex Fuel -- -- -- -- -- -0.8779 0.7836   -- -- -- -- -- (-2.69) (3.61) Plug-in Hybrid -- 0.5869 -- -- 0.8307 -0.9392 0.8037   -- (2.79) -- -- (2.87) (-2.90) (3.77) CNG -- -- -- -- -- -- --   -- -- -- -- -- -- -- Diesel -- 0.7886 -- 1.0441 -- 0.7583 -0.6766   -- (3.63) -- (4.27) -- (2.54) (-3.82) Hybrid Electric -- -- -- -- -- -1.6336 1.5442   -- -- -- -- -- (-5.89) (12.07) Fully Electric -- -- -- -- -- -- -0.5583   -- -- -- -- -- -- (-2.32) New Car -0.1958 -- -- 1.7986 -- 0.4506 3.3215 (-1.61) -- -- (2.84) -- (2.82) (8.10) 1 or 2 years -- -- -- 1.7986 -- -- 3.3215 -- -- -- (2.84) -- -- (8.10) 3 to 7 years -- -- -- 1.7986 -- -- 3.3215 -- -- -- (2.84) -- -- (8.10) 8 to 12 years -- -- -- -- -- -- 2.0138 -- -- -- -- -- -- (4.66) >12 years -- -- -- -- -- -- -- -- -- -- -- -- --  -- TABLE 2b Estimates of the Vehicle Usage Component of Vehicle Selection Module Variable Parameter t-stat Constant 8.4682 128.77 HH Income Above $80K 0.0401 2.25 Presence of children Under 4 years 0.0398 1.58 Location of HH Sub-urban 0.1074 6.61 Presence of senior adults (age>65 years) -0.1281 -5.97 Number of vehicles Two -0.0662 -2.71 Three -0.1667 -5.56 Four -0.2524 -6.21 Number of workers 0.0763 6.83 Mean distance to work /10 (miles) 0.091 12.67 Vehicle Characteristics Car 0.0446 1.85 Small cross utility vehicle -0.1329 -3.01 SUV or Van 0.0767 2.93 8 to 12 years old -0.4298 -8.09 More than 12 years old -0.7189 -12.87 Standard error of the estimate 0.7476 42.42 Scale Parameter () 0.5538 23.91* Copula Dependency Parameter () -3.4097 -9.38 * t-statistic computed against a value of 1 TABLE 3 Disaggregate Measures of Fit for the Validation Sample Sample details Number of households Independent model predictive likelihood Copula based joint model predictive likelihood Predictive likelihood ratio test () Full validation sample 500 -14189.96 -14084.80 208.29 Number of vehicles         Zero 6 -157.011 -156.08 1.86 One 152 -3030.74 -3013.22 35.04 Two 225 -6337.90 -6298.90 77.99 Three 89 -3292.88 -3256.84 72.09 Four or more 28 -1370.43 -1359.78 21.30 Number of workers         Zero 90 -2123.99 -2116.89 14.20 One 171 -4513.83 -4484.28 59.08 Two 196 -5857.35 -5806.80 101.09 Three 37 -1380.86 -1365.08 31.57 Four or more 6 -312.93 -311.77 2.32 Highest Educational Attainment         High school 43 -1117.53 -1108.82 20.68 College (With/without degree) 271 -7768.68 -7726.33 100.78 Post Graduate 186 -5302.75 -5271.41 86.83 Presence of children         0-4 years 57 -1679.78 -1661.28 37.00 5-11 years 74 -2197.82 -2179.51 36.63 12-15 years 58 -1917.09 -1891.06 52.06 Presence of senior adults (Age≥65 years) 113 -2902.10 -2890.35 23.51 Region         Urban 241 -6704.93 -6652.75 104.36 Sub-urban 235 -6785.54 -6740.34 90.40 Rural 24 -698.49 -691.72 13.53 Directory: prof -> bhat -> ABSTRACTS prof -> R institute of technology school of foreign languages prof -> Jackson State University Marching Band The Sonic Boom of the South prof -> The global aftershock zone prof -> Changsun Moon prof -> Michael Oudshoorn Contact Information ABSTRACTS -> Household Vehicle Type Holdings and Usage: An Application of the Multiple Discrete-Continuous Extreme Value (mdcev) Model Chandra R. Bhat and Sudeshna Sen ABSTRACTS -> Assessing the impact of urban form measures on nonwork trip mode choice after controlling for demographic and level-of-service effects Jayanthi Rajamani ABSTRACTS -> The Impact of Demographics, Built Environment Attributes, Vehicle Characteristics, and Gasoline Prices on Household Vehicle Holdings and Use Chandra R. Bhat Download 0.9 Mb. Share with your friends: