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144 A P P E N D I X D HERS-ST Parameter Values for the Western State Case Study The following are parameter values used in the Western State case study for predicting user costs as a function of pavement roughness for using HERS-ST. The parameter values detailed below were substituted for those provided in the HERS-ST documentation. Table D-1 details the basic user costs parameters included in HERS-ST, which are specified by vehicle type. Table D-2 provides the disaggregation factors used to combine data for different vehicle types to obtain overall values for autos and trucks. These are specified by functional classification. Note that for any one functional classification the values for small auto, medium auto and 4-tire truck sum to 1 and indicate the percentage of autos composed of each of these vehicle types. Likewise the remaining columns of the table sum to 1 and indicate the percentage of trucks composed of each of the truck types shown in the table: 6-tire truck, 3-4 axle truck, bus, 4-axle combination and 5-axle combination. Table D-1. User Cost Parameters by Vehicle Type. Table D-2. Fleet Disaggregation Factors by Vehicle Type. Small Med 4-Tire 6-Tire 3-4 Axle 4-Axle 5-Axle Parameter Auto Auto Truck Truck Truck Bus Comb Comb General Parameters by Vehicle Type Personal - Value of Time per Person (2012 $/hr) 12.33 12.32 12.30 0.00 0.00 12.30 0.00 0.00 Personal - Average Occupany (people/vehicle) 1.57 1.75 1.51 0.00 0.00 17.69 0.00 0.00 Personal - Percent of Travel 0.91 0.92 0.78 0.00 0.00 0.92 0.00 0.00 Business - Value of Time per Person (2012 $/hr) 31.48 31.45 31.40 25.50 27.20 23.79 28.00 28.00 Business - Average Occupany (people/vehicle) 1.35 1.34 1.24 1.38 1.14 1.00 1.02 1.02 Business - Vehicle Cost (2012 $/hr) 0.00 0.00 0.00 12.44 19.81 11.03 15.70 13.01 Business - Inventory Cost per Vehicle (2012 $/hr) 0.00 0.00 0.00 0.00 0.00 0.00 0.11 0.17 Cost Index for Value of Time (rel. to 2012) 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 Cost Index for Vehicles (rel. to 2012) 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 Cost Index for Inventory (rel. to 2012) 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 Fuel ($/gallon) 3.2793 3.2793 3.2793 3.2793 3.6405 3.6405 3.6405 3.6405 Oil ($/quart) 9.7447 9.7447 9.7447 3.8962 3.8962 3.8962 3.8962 3.8962 Tires ($/tire) 59.5858 94.1924 103.8198 250.5726 620.4469 620.4469 620.4469 620.4469 Maintenance and Repair ($/1000 miles) 131.1808 159.1968 202.3744 378.7104 535.6000 535.6000 554.7168 554.7168 Depreciable Value ($/vehicle) 23,324 27,510 29,646 44,299 97,458 97,458 112,891 122,751 Fuel Efficiency Adjustment 0.826 1.017 1.233 1.612 0.961 0.961 1.735 1.069 Oil Consumption Adjustment 1.050 1.050 1.050 1.050 1.050 1.050 1.050 1.050 Depreciation Rate Adjustment 1.702 1.702 1.702 1.561 1.561 1.561 1.561 1.561 Small Med 4-Tire 6-Tire 3-4 Axle 4-Axle 5-Axle Functional Class Auto Auto Truck Truck Truck Bus Comb Comb 1 0.24 0.54 0.23 0.14 0.02 0.03 0.08 0.73 2 0.18 0.53 0.29 0.25 0.06 0.04 0.12 0.54 6 0.21 0.48 0.32 0.29 0.10 0.06 0.09 0.46 7 0.15 0.49 0.36 0.34 0.14 0.08 0.11 0.33 8 0.21 0.56 0.24 0.45 0.12 0.08 0.12 0.23 9 0.21 0.56 0.24 0.45 0.12 0.08 0.12 0.23 11 0.25 0.56 0.19 0.22 0.05 0.05 0.09 0.60 12 0.25 0.56 0.19 0.32 0.07 0.07 0.07 0.48 14 0.21 0.59 0.20 0.39 0.07 0.06 0.10 0.39 16 0.20 0.60 0.20 0.39 0.13 0.08 0.07 0.34 17 0.21 0.56 0.24 0.45 0.12 0.08 0.12 0.23 19 0.21 0.56 0.24 0.45 0.12 0.08 0.12 0.23
