Estimating the Effects of Pavement Condition on Vehicle Operating Costs (2012) / Chapter Skim
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Pages 62-76
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62 A t t A c h m e n t User Guide for Vehicle Operating Cost Model The vehicle operating cost (VOC) model is an engineering software application that allows you to calculate vehicle operating costs at the network and project levels.
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63 Getting Started To make sure that the software is running, the security level for Excel must be set to "Medium" or "Low." Figure 2a shows the path to follow to change the security level in Excel 2003. For Excel 2007, you should go to the Developer tab and select "Macro security." Figure 2b shows how to change the security level in Excel 2007 and up.
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64 (a) For Microsoft Excel 2003 (b)
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65 where: VOC = Vehicle operating cost VMT = Vehicle miles traveled (mi) Rate = Consumption rate Price = Unit price i = Index for VOC components (fuel consumption, tire wear, and repair and maintenance costs)
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66 where: VOC = Vehicle operating cost AADT = Average annual daily traffic Distance = Project length Rate = Consumption rate Price = Unit price i = Index for VOC components (fuel consumption, tire wear, and repair and maintenance costs) You will have two options: 1.
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67 Examples This section shows examples of how the VOC models will be used in practice. Three different examples are presented for (1)
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68 (a) Light vehicles at 56 km/h (35 mph)
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69 Figure 9. Effect of roughness on tire costs.
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70 of total cost expressed in cents per kilometer. The figures and the table were generated at 17°C (62.6°F)
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71 Speed Vehicle Class Total Vehicle Operating Costs per Vehicle (¢/km)
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72 divide 57.2 by 56.5 from Table 2 (i.e., the table describes the effect of changing texture, holding IRI constant at 1 m/km) , then multiply this ratio by 57.9 from Table 1 (i.e., the table describes the effect of changing IRI, holding MPD constant at 1 mm)
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73 Figure 13. Costs per year induced by subsection.
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74 1 km = 0.62 mile 0.04 0.05 0.06 0.07 0 1 2 3 4 5 6 7 8 R ed uc ti on in V O C (M ill io n $/ ye ar ) Distance (km)
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75 Table 3. Speed limits used in Example 3.
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76 Table 4. Estimated vehicle operating costs for different scenarios.
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