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Table 1 County off-road vehicle (ORV) crash incident rate ratios (IRR) after passage of ordinances allowing ORVs on public roadways as compared to before passage and to counties that did not pass such ordinances

From: The association between county ordinances allowing off-road vehicles on public roads and crash rates

Data Subset Description

All Years (2002–2018)

Recent Years (2008–2018)

Crashes

IRR

95%CI

Crashes

IRR

95%CI

All crashes

2,347

1.58

1.32–1.90

1,424

1.44

1.19–1.74

All ATV crashes

2,115

1.66

1.34–2.04

1,207

1.47

1.19–1.83

All on-road crashes

834

1.48

1.14–1.94

544

1.39

1.06–1.83

All on-road ATV crashes

683

1.70

1.20–2.40

399

1.53

1.07–2.17

All crashes, ever passed ordinance only*

843

1.59

1.22–2.06

526

1.43

1.10–1.88

On-road crashes, ever passed ordinance only*

324

1.64

1.09–2.47

229

1.57

1.03–2.38

ATV crashes, UTV only counties removed‡

2,011

1.74

1.40–2.15

1,136

1.54

1.23–1.92

  1. * Only includes counties that passed ordinances through 2018 (45 of 99 counties)
  2. ‡ Only includes counties with ATV ordinances or no ordinance through 2018 (93 of 99 counties)
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Injury Epidemiology

ISSN: 2197-1714