Table 5 The coefficient for the ARIMAX model with independent loss of control, brake failure, passenger cars, heavy vehicles, pickup cars, motorcycles, inattention to forward direction, unauthorized speed, average humidity, and average temperature variables.

1 ~ Loss of control

0.43

0.05

0.042

(0.23, 0.63)

1 ~ Brake failure

0.69

0.01

0.002

(0.44, 0.91)

2 ~ Accidents with passenger cars

0.54

0.03

0.031

(0.38, 0.72)

1 ~ Accidents with heavy vehicles

0.37

0.09

0.043

(0.21, 0.68)

1 ~ Accidents with pickup cars

0.24

0.23

0.051

(− 0.43, 0.44)

1 ~ Accidents with motorcycle

0.03

0.06

0.133

(− 0.52, 0.82)

4 ~ Accidents with motorcycle

0.12

0.08

0.112

(− 0.67, 0.73)

1 ~ Inattention to forward direction

0.82

0.01

0.014

(0.02, 0.92)

1 ~ Unauthorized speed

0.81

0.02

0.001

(0.03, 0.97)

4 ~ Average humidity

0.38

0.02

0.048

(0.22, 0.82)

1 ~ Average temperature

0.62

0.001

0.003

(0.24, 0.74)

MA1

− 0.76

0.09

 < 0.001

(− 1.22, − 0.43)

MA2

− 0.28

0.12

 < 0.001

(− 1.14, − 0.11)