Improving driver safety with behavioral countermeasures.

Lenneman, John K.; Backs, Richard W.; Cassavaugh, Nicholas; Bos, Alex; VanBergen, Noah · 2011 · ROSA P / Michigan. Dept. of Transportation. Office of Research and Best Practices

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Summary

This report, commissioned by the Michigan Department of Transportation (MDOT) and conducted by the Center for Driving Evaluation, Education & Research at Central Michigan University, addresses the need for data-driven strategies to improve driver safety in Michigan. The research was motivated by the persistent loss of life and economic resources due to motor vehicle crashes, particularly those involving alcohol-impaired driving, young drivers, older drivers, distracted driving, and drowsy driving. The study aimed to provide MDOT with specific insights into the effectiveness, costs, and implementation issues of behavioral countermeasures, filling a gap left by broader national reports that lacked state-specific applicability. The methodology comprised two primary components: comprehensive literature reviews and an empirical pilot study. The reviews analyzed national and state-level behavioral countermeasures, synthesizing data to evaluate their efficacy across the identified problem areas. The researchers assessed each countermeasure based on three dimensions: effectiveness, cost, and implementation requirements. Additionally, the team conducted a pilot study using the CMU AAA Michigan Driving Simulator to test a specific engineering-based behavioral countermeasure. Twenty subjects participated in the simulator study, navigating scenarios with varying construction zone lengths and barrel spacing patterns. The primary metric analyzed was mean velocity, comparing speeds at the beginning of the construction zone taper versus the start of the active work zone. The findings from the literature reviews categorized various countermeasures into levels of effectiveness, ranging from "proven effective" to "proven not effective." For instance, sobriety checkpoints and graduated driver licensing programs were identified as highly effective, while traffic violator schools and certain fear-based education tactics were deemed ineffective. The report provided detailed estimates for the cost and implementation challenges of each reviewed measure, such as saturation patrols for alcohol-impaired driving and nighttime restrictions for young drivers. The pilot study results demonstrated that manipulating the spacing of traffic barrels in construction zones significantly influences driver speed. Specifically, a slow, gradual reduction in barrel spacing caused greater reductions in vehicle velocity compared to a rapid reduction in spacing. This suggests that passive control devices can effectively encourage safer driving behaviors in high-risk zones. The significance of this work lies in its provision of a tailored implementation plan for Michigan’s Strategic Highway Safety Plan. By integrating national data with state-specific analysis, the report offers decision-makers a clear framework for allocating safety funding. It highlights that countermeasure efficacy often depends on a programmatic, multi-faceted approach rather than isolated interventions. The findings support the adoption of proven strategies like primary seat belt laws and ignition interlocks, while cautioning against ineffective measures. Furthermore, the empirical validation of barrel spacing as a speed-reduction tool offers a practical, low-cost engineering solution for improving safety in construction zones, contributing to broader efforts to reduce crash fatalities and injuries in Michigan.

Key finding

Gradually reducing the spacing between barrels in a construction zone caused greater reductions in driver velocity than a rapid reduction in space between the barrels.

Methodology

simulator

Sample size: 20

Provenance

The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed. Discovered via bulk_ingest_rosap on 2026-05-23 (6 acquisition events logged).

Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.

Topics

Ranked by relevance to this paper. Hover a topic for its definition.

• driver education effectiveness
• public messaging
• dui enforcement
• regulatory evaluation
• parental management
• perceptual countermeasures

Information type

What kind of knowledge this paper contributes, grouped by family — independent of topic (what it is about) and method (how it was studied).

• Applied Guidance: countermeasure evaluation, policy recommendations
• Empirical Findings: observational prevalence