Table 4. ORNL Comparison of PMT and VMT Estimates
Friday, November 22, 2024
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Person Miles of Travel per Household (PT)
| Add-On Areas | Baseline Standards | Std Err % | % Difference from Baseline | ||||
|---|---|---|---|---|---|---|---|
| C. Div & MSA Size-based | MSA Size-based | CENSUS Division-based | CENSUS Region-based | Regression-based | |||
| New York | 67.96 | 2.41% | 6.36% | 314.00% | 8.14% | 12.71% | -3.38% |
| Wisconsin | 87.99 | 2.52% | 6.82% | 9.95% | 3.23% | 5.80% | -6.99% |
| Texas | 100.12 | 3.89% | 4.99% | -5.05% | 6.63% | 6.55% | -17.30% |
| Baltimore | 75.71 | 2.70% | 14.82% | 8.02% | 30.01% | 32.59% | -3.61% |
| Lancaster | 79.93 | 5.35% | 8.93% | 20.86% | -4.48% | -1.77% | 5.71% |
| Des Moines | 71.69 | 9.94% | 25.82% | 29.97% | 38.05% | 29.25% | 11.86% |
| Kentucky | 99.46 | 5.79% | 7.93% | 4.13% | 7.68% | 0.16% | -4.50% |
| Hawaii | 68.04 | 7.36% | 66.85% | 79.17% | 39.68% | 43.77% | 33.31% |
| Oahu | 68.44 | 7.20% | 68.03% | 46.00% | 42.29% | 46.52% | -0.78% |
| Mean Absolute Deviation | 22.39% | 26.06% | 20.02% | 19.90% | 9.72% | ||
| Number of "Wins" | 1 | 0 | 1 | 2 | 6 | ||
Vehicle Miles of Travel per Household (VT)
| Add-On Areas | Baseline Standards | Std Err % | % Difference from Baseline | ||||
|---|---|---|---|---|---|---|---|
| C. Div & MSA Size-based | MSA Size-based | CENSUS Division-based | CENSUS Region-based | Regression-based | |||
| New York | 38.78 | 2.54% | 15.00% | 51.48% | 17.17% | 26.03% | 0.42% |
| Wisconsin | 60.85 | 2.76% | 4.74% | 5.02% | 1.10% | 1.64% | -12.76% |
| Texas | 68.12 | 4.44% | 4.78% | -9.43% | 6.62% | 4.34% | -20.90% |
| Baltimore | 52.88 | 2.93% | 3.54% | 1.08% | 23.61% | 27.30% | -9.41% |
| Lancaster | 52.05 | 4.43% | 8.44% | 19.09% | -10.84% | -4.61% | 5.31% |
| Des Moines | 48.28 | 8.98% | 19.12% | 24.93% | 30.64% | 27.62% | 12.21% |
| Kentucky | 66.93 | 6.22% | 9.25% | 1.06% | 7.56% | 80.00% | -4.85% |
| Hawaii | 44.49 | 4.14% | 32.67% | 74.73% | 36.27% | 41.76% | 20.79% |
| Oahu | 41.10 | 3.40% | 57.62% | 66.55% | 50.26% | 56.33% | -1.09% |
| Mean Absolute Deviation | 17.24% | 28.12% | 20.45% | 21.19% | 9.75% | ||
| Number of "Wins" | 0 | 1 | 1 | 3 | 4 | ||
Percentage difference in bold indicate the method that gives estimates closest to the baseline
Percentage difference in yellow highlight indicate the cluster-based approach gives estimates closest to the baseline
Source: Hu et al. 2007, Table 12. Comparing Baseline Standards to Various Trip-Frequency Estimates, Data from Nine 2001 NHTS Add-on Areas.