TABLE OF CONTENTS
Page
Evaluation of Use and Lose Laws i
PREFACE ii
Technical Summary iii
I. INTRODUCTION 1
Background 1
II. METHOD 2
Site Selection 2
Missouri 2
Pennsylvania 2
Analytic Approach 2
III. RESULTS 3
Missouri 3
Pennsylvania 4
IV. DISCUSSION 6
Conclusion 6
V. REFERENCES 7
APPENDIX A. STATE LAW SUMMARY 8
APPENDIX B. TEXT OF MISSOURI AND PENNSYLVANIA LAWS 9
APPENDIX C. AGE AND GENDER INTERACTIONS 10


LIST OF TABLES
Page
Table 1. Study Population Characteristics, Missouri 3
Table 2. Missouri Input Arrests 3
Table 3. License Action by Input Arrest Type, Missouri 3
Table 4. Subsequent Violations-Suspension versus No Suspension, Missouri 3
Table 5. Study Population Characteristics, Pennsylvania 4
Table 6. Four Driver's License Action Groups Following Input Arrest, Pennsylvania 4
Table 7. Distribution of Subsequent Violations, Crashes, and License Actions, Pennsylvania 4
Table 8. Associations Between Age or Gender or Driver's License Action Group with a Subsequent Violation, Pennsylvania 4
Table 9. Associations Between Age or Gender or Driver's License Action Group with a Subsequent Crash, Pennsylvania 4
Table 10. Proportional Hazards Model: Age or Gender of Driver's License Action Group as Predictors of Incidence of 1st Subsequent Violation, Pennsylvania 5
Table 11. Proportional Hazards Model: Age or Gender of Driver's License Action Group as Predictors of Incidence of 1st Subsequent Crash, Pennsylvania 5


LIST OF FIGURES
Page
Figure 1. Cumulative Hazard Rate for Subsequent 1st Violation vs. Subsequent 1st Crash, Pennsylvania 5
Figure 2. Cumulative Hazard Rate for Subsequent 1st Violation: Males vs. Females, Pennsylvania 5
Figure 3. Cumulative Hazard Rate for Subsequent 1st Violation, By License Action Groups, Pennsylvania 5
Figure 4. Cumulative Hazard Rate for Subsequent 1st Crash, By License Action Groups, Pennsylvania 5


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