Travel During Suspension Period


Cover Page

Technical Report

Technical Summary

Acknowledgements

List of Tables

Introduction

Study Sites

Observational Study

Focus Group Research

Conclusions

References

 

 

Of the 57 Milwaukee subjects, 30 subjects (53 percent) drove during at least one of the two four-hour during-suspension observations, 4 subjects (7 percent) did not drive but used alternative transportation on at least one occasion, and 23 subjects (40 percent) did not travel during either observation (Table 3.5). Of the 36 Bergen County subjects, 8 subjects (22 percent) drove at least once, 14 subjects (39 percent) did not drive but used alternative transportation, and 14 subjects (39 percent) did not travel during either observation. The differences between the observation results at the two sites were significantly different (p < .001).

 

 

Table 3.5: Observed Travel During License Suspension Period

Milwaukee and Bergen County

 

Milwaukee

Bergen County

Drove at Least Once

52.6%

(30)

22.2%

(8)

Did Not Drive and Used Alternative Travel

7.0%

(4)

38.9%

(14)

Travel not Observed

40.4%

(23)

38.9%

(14)

TOTAL

100.0%

(57)

100.0%

(36)

 

Χ = 16.6, p < .001, df = 2

A more direct and precise measure of the prevalence of driving is the proportion of subjects who drove, based only on those subjects who were observed traveling during either of the two four-hour during-suspension observation periods. These results, summarized in Table 3.6, are even more striking. Of the 34 Milwaukee subjects who traveled during at least one observation, 30 subjects (88 percent) drove at least once. By contrast, of the 22 Bergen County subjects who traveled, 8 subjects (36 percent) were observed driving on at least one occasion. The difference between sites was statistically significant (p < .001).

Table 3.6: Method of Travel for Subjects Observed Traveling During License Suspension Period

Milwaukee and Bergen County

 

Milwaukee

Bergen County

Drove at Least Once

88.2%

(30)

36.4%

(8)

Did Not Drive and Used Alternative Travel

11.8%

(4)

63.6%

(14)

TOTAL

100.0%

(34)

100.0%

(22)

 

Χ = 16.5, p < .001, df= 1