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Effectiveness of DL Sanctions

Effectiveness of DL Sanctions. Milton J. Grosz, Florida Division of Driver Licenses Richard E. Zeller, Florida Highway Patrol Donald F. Klein, Florida Division of Driver Licenses.

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Effectiveness of DL Sanctions

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  1. Effectiveness of DL Sanctions Milton J. Grosz, Florida Division of Driver Licenses Richard E. Zeller, Florida Highway Patrol Donald F. Klein, Florida Division of Driver Licenses

  2. Research funded by a NHTSA Highway Safety Grant through the Florida Department of Transportation, State Safety Office Project number FT-01-24-10-01

  3. Introduction • Intended to study the effectiveness of driver license sanctions in improving driver behavior • Sanctions include suspension and revocation • Also education and treatment interventions

  4. Introduction • Currently, effectiveness is limited by a 30% conviction rate for driving on a suspended license • Convince lawmakers to put more teeth in the law • Encourage drivers to take the steps to get their licenses back

  5. Database • Driver history data are difficult to obtain for research purposes • Kept in a transaction-based mainframe database • Use is limited by the need to keep the driver license offices functioning

  6. Database • A snapshot of driver history data was downloaded to an SQL database on a Windows NT server • Two years were used for this study • A new snapshot will be added annually

  7. Database • Information is expunged from the driver history at various time intervals • Snapshot will preserve information for use in future years

  8. Database • Downloaded information includes • Demographic information on the driver • Convictions • Suspensions, Revocations, and Cancellations • Beginning and ending dates of sanctions • Number of times a particular sanction has been applied • Driver school and treatment information

  9. Methodology • Drivers divided into two groups • Those that completed all requirements and got a new license • Those that continued to drive without a license • Separate studies carried out for those with DUI convictions and those who were suspended, cancelled, or revoked

  10. Methodology • Convictions and crashes counted for periods before and after the sanctions • Two groups were compared on their mean number of convictions and crashes • Studies were conducted for convictions in 1997 and in 2000

  11. Results • For the suspended, cancelled, or revoked group in 1997 • Those with suspensions resolved averaged 3.7 convictions and 0.5 crashes after sanctions • Unresolved had 6.3 convictions and 0.9 crashes • In 2000: • Resolved: 3.5 convictions and 0.4 crashes • Unresolved: 3.8 convictions and 0.7 crashes

  12. Results • For those with revocations in 1997: • Resolved: 3.7 convictions and 0.5 crashes • Unresolved: 6.9 convictions and 0.9 crashes • In 2000: • Resolved: 3.8 convictions and 0.5 crashes • Unresolved: 5.4 convictions and 0.7 crashes

  13. Results • For those with cancellations in 1997: • Resolved: 3.8 convictions and 0.5 crashes • Unresolved: 2.1 convictions and 0.3 crashes • In 2000: • Resolved: 4.8 convictions and 0.7 crashes • Unresolved: 1.6 convictions and 0.2 crashes

  14. Results • DUI Suspensions in 1997: • Resolved: 2.4 convictions and 0.3 crashes • Unresolved: 5.1 convictions and 0.7 crashes • In 2000: • Resolved: 1.9 convictions and 0.3 crashes • Unresolved: 3.6 convictions and 0.9 crashes

  15. Results • DUI Revocations in 1997: • Resolved: 2.5 convictions and 0.3 crashes • Unresolved: 4.8 convictions and 0.7 crashes • In 2000: • Resolved: 2.2 convictions and 0.3 crashes • Unresolved: 2.9 convictions and 0.4 crashes

  16. Conclusion • Drivers who do not complete the actions to regain a license present a significantly higher risk on the highway • Actions which encourage violators to complete education and treatment interventions improve driver behavior

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