Research Article
A Design Method for the Roadside Clear Zone Based on Accident Simulation Analysis
Table 4
Estimate of the parameters.
| Variable | Parameter | Standard deviation | Wald | Degree of freedom | Significance |
| Departure speed | 0.078 | 0.003 | 1,877 | 1 | <0.01 | Horizontal curve radius | −2.7e − 04 | 0.001 | 1,749 | 1 | <0.01 | Adhesion coefficient | −4.011 | 0.186 | 466 | 1 | <0.01 | Shoulder width | −1.515 | 0.073 | 434 | 1 | <0.01 | Constant | −4.085 | 0.211 | 373 | 1 | <0.01 |
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