2012-2013

2012-2014

2012-2015

2012-2016

Effect

DF

Wald ChiSq

Pr > ChiSq

Wald ChiSq

Pr > ChiSq

Wald ChiSq

Pr > ChiSq

Wald ChiSq

Pr > ChiSq

Vehicle Type

4

513.796

<0.0001

773.573

<0.0001

1005.152

<0.0001

1302.209

<0.0001

Road Classification

2

62.387

<0.0001

63.925

<0.0001

58.591

<0.0001

57.832

<0.0001

Driver Gender

1

51.262

<0.0001

58.242

<0.0001

107.301

<0.0001

145.8213

<0.0001

Lane

4

52.370

<0.0001

57.563

<0.0001

95.317

<0.0001

101.7103

<0.0001

Driver Cell Phone Use

1

25.645

<0.0001

49.523

<0.0001

67.574

<0.0001

75.4237

<0.0001

Passenger Present

1

2.809

0.0937

5.360

0.0206

8.138

0.0043

9.2257

0.0024