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Table 3 Motor vehicle crash incidents, by crash characteristics and lights and sirens (L&S) response

From: A predictive ambulance dispatch algorithm to the scene of a motor vehicle crash: the search for optimal over and under triage rates

 

Not L&S

L&S

Total

Total

n

n

n

Col %

Accident Type

 Intersection

4,230

653

4,883

40.8%

 Midblock

2,513

586

3,099

25.9%

Airbag deployed

 Any airbag deployed

3,280

571

3,851

32.2%

 No airbag deployed

6,920

1,200

8,120

67.8%

Alignment

 Curve

861

206

1,067

8.9%

 Straight

4,669

850

5,519

46.1%

Atmosphere

 Clear

3,207

694

3,901

32.6%

 Dust/Smoke

5

1

6

0.1%

 Fog/Mist

12

3

15

0.1%

 Fog/smoke/dust

0

1

1

0.0%

 Overcast

277

90

367

3.1%

 Raining

358

55

413

3.5%

Day of the week

 Monday

1,384

189

1,573

13.1%

 Tuesday

1,481

261

1,742

14.6%

 Wednesday

1,537

234

1,771

14.8%

 Thursday

1,552

271

1,823

15.2%

 Friday

1,683

297

1,980

16.5%

 Saturday

1,360

258

1,618

13.5%

 Sunday

1,203

261

1,464

12.2%

Ejected

 Anyone ejected

63

62

125

1.0%

 No one ejected

10,137

1,709

11,846

99.0%

Grade

 Crest of hill

78

18

96

0.8%

 Level

3,321

668

3,989

33.3%

 Slope

666

186

852

7.1%

Lighting

 Daylight

4,867

824

5,691

47.5%

 Dawn/Dusk

479

75

554

4.6%

 Dark—street lights on

1,095

257

1,352

11.3%

 Dark—Street Lights Off

19

6

25

0.2%

 Dark—Street Lights Not Provided

69

46

115

1.0%

Not ambulant

 Anyone not ambulant

140

116

256

2.1%

 Everyone ambulant

10,060

1,655

11,715

97.9%

Older

 Any aged ≥ 75 years

739

120

859

7.2%

 Everyone aged ≤ 74 years

9,461

1,651

11,112

92.8%

Single versus Multi-vehicle

 2 or more vehicles

5,314

689

6,003

50.1%

 Single vehicle

1,423

326

1,749

14.6%

Surface

 Sealed

3,321

668

3,989

33.3%

 Unsealed

78

18

96

0.8%

Rollover

 Any vehicle rolled

377

67

44

0.4%

 No vehicle rolled

9,823

1,704

11,527

96.3%

Trapped

 Anyone trapped

444

303

747

6.2%

 No one trapped

9,756

1,468

11,224

93.8%

Under

 Anyone ≤ 12 years

455

92

547

4.6%

 Everyone ≥ 13 years

9,745

1,679

11,424

95.4%

Vulnerable

 Motor vehicle occupant

6,866

854

7,720

64.5%

 Vulnerable

1,943

536

2,479

20.7%

 Total

10,200

1,771

11,971

100.0%

  1. *Components may not sum to the total due to missing data