Skip to main content

An Open Access Journal

Table 1 Summary of parameter description

From: Exploring injury severity of pedestrian-vehicle crashes at intersections: unbalanced panel mixed ordered probit model

Parameter

Category

Count (proportion)

(i) Dependent variables

 

Year

2015

503 (25.2%)

2016

520 (26.1%)

2017

517 (25.9%)

2018

455 (22.8%)

Injury severity

1-No injuries

68 (3.4%)

2-Slight injury

1375 (68.9%)

3-Severe injury

513 (25.7%)

4-Fatality

39 (2.0%)

(ii) Categorical variables

 

Pedestrian age

0-Less than 15 years old

147 (7.4%)

1–15- 65 years old

1245 (62.4%)

2-More than 65 years old

603 (30.2%)

Driver circumstances

1-Delayed detection of danger

86 (4.3%)

2-Disregarding the advantage of passing

146 (7.3%)

3-Disregarding the light sign

77 (3.9%)

4-Disregarding the light sign—pedestrian

128 (6.4%)

5-Driving at an insufficient distance

5 (0.2%)

6-Improper detour

9 (0.5%)

7-Improper inclusion in traffic

25 (1.2%)

8-Improper driving(overtaking/reversing/passing/speed/turning)

281 (14.1%)

9-Negligent handling of the vehicle

16 (0.8%)

10-Non-use of a marked pedestrian crossing

67 (3.4%)

11-Other driver mistake

720 (36.1%)

12-Other pedestrian mistake

97 (4.9%)

13-Speed inappropriate for conditions

337 (16.9%)

14-The unexpected appearance of danger on the road

1 (0.01%)

Vehicle type

1-Bicycle

28 (1.4%)

2-Personal automobile

1428 (71.6%)

3-Bus/truck/tram

132 (6.6%)

4-Motorcycle

49 (2.5%)

0-Unknown

358 (17.9%)

Intersection type

0-Y-intersection

118 (5.9%)

1-T-intersection

919 (46.1%)

2-Four-intersection

907 (45.5%)

3-Roundabout

51 (2.5%)

Road conditions

0-Dry

1506 (75.5%)

1-Wet (including snow)

482 (24.2%)

2-Other

7 (0.3%)

Speed limit

0 < 50 km/h

168 (8.4%)

1 = 50 km/h

1755 (88.0%)

2 > 50 km/h

72 (3.6%)

Visibility conditions

0-Day

1368 (68.6%)

1-Dawn/twilight

49 (2.4%)

2-Night

578 (29.0%)

Public lighting

0-In operation

923 (46.2%)

1-Out of order

1037 (51.9%)

2-No lighting

35 (1.8%)

Weather conditions

1-Clear(brightly, cloudy)

1663 (83.3%)

2-Rain/snow

311 (15.6%)

3-Fog

21 (1.1%)

Condition of vertical signalization

0-Good

1947 (97.6%)

1-Bad/damaged

6 (0.3%)

2-No vertical signalization

42 (2.1%)

Condition of horizontal signalization

0-Good

1936 (97.0%)

1-Bad/deficient

13 (0.7%)

2-No horizontal signalization

46 (2.3%)

 

Mean

SD

Min

Max

(iii) Continuous variables

    

Total vehicle

Total vehicles involved

1.02

0.16

1

4

NoPT

No. of participants in total

2.13

0.46

1

7

NoPD

No. of participants dead

0.02

0.14

0

2

NoPS

No. of participants slightly injured

0.26

0.45

0

2

NoPI

No. of participants severely injured

0.74

0.53

0

4

NoPN

No. of participants no injuries

1.10

0.45

0

6

(iv) Indicator variables

    

Day

1 = Weekday, 0 = weekend

0.83

 

0

1

Gender

1 = Male, 0 = Female

0.37

 

0

1

Alcohol

1 = Yes, 0 = No

0.03

 

0

1

Environment

1 = Environment arranged, 0 = poorly or deficiency in environment

0.98