An Analysis of the Potential Legal Constraints on the Use of Mechanical Devices to Monitor Driving Restrictions

Ruschmann, P. A. (Paul A.); Carroll, Hal O.; Greyson, Murray; Joscelyn, Kent B. · 1979 · ROSA P / United States. National Highway Traffic Safety Administration

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Summary

This 1979 report, prepared by the University of Michigan Highway Safety Research Institute for the National Highway Traffic Safety Administration, analyzes the legal feasibility of using mechanical devices to monitor driving restrictions for sanctioned traffic offenders. The study addresses the problem of ineffective enforcement of driving restrictions, particularly for drivers convicted of driving while intoxicated (DWI), who often evade detection due to low apprehension rates. The research evaluates three conceptual countermeasures: the Drunk Driver Warning System (DDWS) and the Continuous Monitoring Device (CMD), which use psychomotor tests to detect impairment from alcohol, drugs, or fatigue; and the Operating Time Recorder (OTR), which logs vehicle operation times to enforce time-of-day driving restrictions. The methodology involved a comprehensive legal analysis of potential constraints under U.S. constitutional and statutory law. The authors examined the authority of courts and driver-licensing agencies to mandate device installation through four primary sanctioning mechanisms: probation, pretrial diversion, earned charge reduction (ECR), and administrative license restrictions. The study assessed whether these mandates violated constitutional protections, including due process, equal protection, and the privilege against self-incrimination, as well as statutory limitations on probation conditions and vehicle equipment regulations. The findings indicate that the proposed devices are constitutionally permissible means of enforcing driving restrictions. The analysis concludes that requiring installation of these devices is a reasonable condition of probation or license restriction because it is directly related to the offender’s criminal conduct and serves the legitimate state interest of highway safety. The report notes that while the devices invade privacy and liberty interests, such restrictions are upheld when imposed on sanctioned offenders who consent to them as alternatives to harsher penalties like jail time or full license revocation. The study also identifies potential legal challenges regarding plea bargaining validity, evidentiary reliability of device records, and tort liability, but suggests these can be resolved through proper procedural safeguards and statutory frameworks. The significance of this work lies in establishing the legal foundation for implementing technological countermeasures to deter impaired driving. By confirming that mechanical monitoring devices do not inherently violate constitutional rights when applied to restricted drivers, the report supports the development and deployment of such systems. It provides public safety officials and legal counsel with a guide to identifying and resolving legal obstacles, thereby facilitating the integration of these devices into traffic law enforcement and rehabilitation programs.

Key finding

The proposed mechanical devices represent a constitutional means of enforcing drinking and driving restrictions when implemented as reasonable conditions of probation or licensing alternatives for sanctioned offenders.

Methodology

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