An evaluation of the short-term effects of the Virginia driver improvement program : interim report.

Lynn, Cheryl · 1981 · ROSA P / Virginia Transportation Research Council (VTRC)

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Summary

This interim report evaluates the short-term effects of Virginia’s Driver Improvement Program, which replaced punitive sanctions with remedial treatments for negligent operators in 1975. The study, conducted by the Virginia Highway and Transportation Research Council, aimed to determine the program’s impact on traffic accidents and convictions. The evaluation focused on three primary treatment levels: advisory letters, group interviews, and personal interviews combined with driver improvement clinics. The research design utilized experimental and control groups formed by randomly assigning eligible drivers, a process enabled by specific legislation passed in 1978. The study found that the advisory letter, serving as the initial contact for drivers accumulating six demerit points, was ineffective in reducing either accident or conviction rates. Similarly, group interviews were ineffective when preceded by an advisory letter. However, group interviews administered as a first contact (bypassing the letter) significantly reduced convictions. Personal interviews, typically combined with clinic attendance, were effective in reducing major (6-point) convictions but had no impact on minor (3-4 point) convictions. Crucially, no treatment within the program successfully reduced accident involvement. The authors note that while convictions are a reliable surrogate for accident potential, treatments may alter conviction-related behaviors without affecting accident-causing behaviors. Based on these findings, the report concludes that the current advisory letter procedure requires modification to ensure effectiveness. Recommendations include abandoning the current letter format in favor of group interviews at the entry level, altering the letter’s content and threat level, or substituting a different treatment entirely. The report also suggests reorienting interviews and classes to specifically target accident avoidance rather than just conviction reduction. Finally, it strongly recommends establishing a system for ongoing monitoring and evaluation to continuously assess the program’s impact and the efficacy of any implemented changes.

Key finding

Personal interviews combined with driver improvement clinics reduced major six-point convictions but failed to reduce minor convictions or accidents, while advisory letters and group interviews showed no significant impact on either metric.

Methodology

naturalistic

Provenance

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Topics

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• driver education effectiveness
• induced exposure
• regulatory evaluation
• older driver retraining

Information type

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• Applied Guidance: countermeasure evaluation
• Empirical Findings: crash risk outcomes