Research Article
The Impact of Aggressive Driving Behavior on Driver-Injury Severity at Highway-Rail Grade Crossings Accidents
Table 3
Mixed Logit Model Estimation Results for Drivers with Appropriate Driving Behavior.
| | Variables Description | Parameter Estimate | Standard Error | t-Statistic | Elasticity | | Fatality | Injury | PDO |
| | Defined for Fatality | | | | | | | | Constant | -4.761(1.572) | 0.1683(0.523) | 8.75(2.38) | | | | | Vehicle & Train Characteristics | | | | | | | | Vehicle Speed | 3.386(0.015) | 0.007(0.012) | 3.28(1.56) | 8.4% | 10.3% | -5.2% | | Train Speed | 2.563(0.036) | 0.062(0.032) | 5.62(2.91) | 3.8% | 3.2% | -2.3% | | SUV | 1.753(0.028) | 0.126(0.328) | 4.82(1.78) | 7.2% | -8.3% | 5.1% | | Pick-up | 0.952(0.041) | 0.203(0.512) | 3.38(1.28) | 3.5% | -31.2% | 1.9% | | Driver's Characteristics | | | | | | | | Age lees than 25 | 1.361(0.008) | 0.006(0.026) | 6.32(3.52) | 6.9% | 12.1% | -6.5% | | Male, fixed parameter | 0.525 | 0.128 | 3.82 | 2.1% | 3.6% | -1.7% | | Environmental/ situational factors | | | | | | | | Peak-hour, fixed parameter | 1.952 | 0.628 | 4.02 | 3.5% | 12.3% | -3.7% | | Weather fog | 0.652(0.192) | 0.072(0.031) | 5.12(2.37) | 3.9% | -5.6% | 2.3% | | Weather Rain | 0.851(0.325) | 0.627(0.043) | 2.85(1.21) | 1.2% | -2.6% | 0.8% | | Highway-rail Grade Crossing Attributes | | | | | | | | Passive control, fixed parameter | 1.572 | 0.521 | 6.57 | 5.2% | 3.6% | -2.7% | | Open space area | 1.378(0.258) | 0.063(0.321) | 3.31(2.19) | 9.1% | 5.2% | -3.6% | | Defined for Injury | | | | | | | | Vehicle & Train Characteristics | | | | | | | | Vehicle Speed | 2.321(0.021) | 0.015(0.009) | 3.12(2.16) | 10.7% | 8.4% | -1.9% | | SUV | 1.521(0.032) | 0.071(0.027) | 3.61(1.37) | 6.5% | -14.9% | 1.7% | | Driver’s Characteristics | | | | | | | | Male, fixed parameter | 0.536 | 0.218 | 5.32 | 1.9% | 2.5% | -0.9% | | Environmental/ situational factors | | | | | | | | Peak-hour, fixed parameter | 1.582 | 0.372 | 3.86 | 5.8% | 4.2% | -9.1% | | Highway-rail Grade Crossing Attributes | | | | | | | | Open space area | 1.385(0.327) | 0.051(0.273) | 5.52(1.39) | 7.3% | 3.6% | -1.9% | | Defined for PDO | | | | | | | | Vehicle & Train Characteristics | | | | | | | | Vehicle Speed | 1.251(0.032) | 0.029(0.005) | 5.12(1.58) | 6.2% | 4.9% | -5.1% | | Train Speed | 1.385(0.027) | 0.031(0.038) | 6.23(2.16) | 3.2% | 2.7% | -3.2% | | Pick-up | 0.891(0.018) | 0.056(0.043) | 3.76(2.32) | 2.1% | -17.8% | 2.6% | | Driver’s Characteristics | | | | | | | | Age lees than 25 | 0.683(0.007) | 0.012(0.021) | 4.58(3.09) | 6.9% | 5.6% | -4.7% | | Male, fixed parameter | 0.352 | 0.235 | 3.98 | 1.7% | 2.3% | -2.6% | | Environmental/ situational factors | | | | | | | | Peak-hour, fixed parameter | 1.305 | 0.528 | 4.31 | 3.7% | 2.5% | -7.3% | | Weather Rain | 0.792(0.217) | 0.479(0.218) | 0.68(2.51) | 2.9% | 2.5% | -4.6% | | Weather Sleet | 0.631(0.129) | 0.762(0.327) | 5.38(3.62) | 1.9% | -0.7% | 2.5% | | Highway-rail Grade Crossing Attributes | | | | | | | | Passive control, fixed parameter | 1.127 | 0.436 | 4.58 | 2.3% | 1.8% | -3.1% | | Model Statistics | | | | | | | | Number of Observations | 11481 | | | | | Log-likelihood at constants | -1032.07 | | | | | Log-likelihood at convergence | -576.18 | | | |
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Notes: Parentheses indicate standard errors of random parameter estimates.
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