| Model | MixedLM |
| Dependent Variable: | Crash count | ||
| No. observations | 480 |
| Method: | REML | ||
| No. groups | 201 |
| Scale | 1.127 | ||
| Min. group size | 2 |
| Log-Likelihood | −766.263 | ||
| Max. group size | 4 |
| Converged | Yes | ||
| Mean group size | 2.4 |
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| Coef. | Std. Err | z | P > |z| | [0.025 | 0.975] |
| Intercept | −9.307 | 2.541 | −3.662 | 0.000 | −14.288 | −4.327 |
| C (Road type) (T. Rural intestate) | 0.492 | 0.363 | 1.355 | 0.175 | −0.220 | 1.204 |
| C (WZ status) (T. Non-active) | 0.202 | 0.098 | 2.062 | 0.039 | 0.010 | 0.395 |
| QMH | 0.057 | 0.031 | 1.860 | 0.063 | −0.003 | 0.117 |
| Speed deficit | 0.217 | 0.041 | 5.297 | 0.000 | 0.137 | 0.298 |
| Segment length | 1.313 | 0.443 | 2.966 | 0.003 | 0.445 | 2.181 |
| Log (Aadt) | 0.850 | 0.238 | 3.573 | 0.000 | 0.384 | 1.316 |
| Group Var | 0.321 | 0.085 |
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