Model

MixedLM

Dependent Variable:

Crash count

No. observations

480

Method:

REML

No. groups

201

Scale

1.103

Min. group size

2

Log-Likelihood

−750.048

Max. group size

4

Converged

Yes

Mean group size

2.4

Coef.

Std. Err

z

P > |z|

[0.025

0.975]

Intercept

−5.722

2.443

−2.342

0.019

−10.511

−0.933

C (Road type) (T. Rural intestate)

0.295

0.341

0.865

0.387

−0.373

0.963

C (WZ status) (T. Non-active)

0.024

0.099

0.245

0.807

−0.170

0.219

CMH

0.059

0.009

6.397

0.000

0.041

0.077

Speed deficit

0.108

0.043

2.522

0.012

0.024

0.192

Segment length

0.667

0.424

1.563

0.116

−0.164

1.498

Log (Aadt)

0.534

0.228

2.346

0.019

0.088

0.981

Group Var

0.221

0.072