Recommendations to Improve Driver Education on Traffic Control Devices

Picha, Dale L.; Ford, Garry L.; Parham, Angelia H. · 1999 · ROSA P / Texas Transportation Institute. Texas A&M University

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Summary

This report, produced by the Texas Transportation Institute in 1999, addresses the critical issue of driver misunderstanding regarding traffic control devices, including signs, signals, and pavement markings. The research was motivated by previous studies indicating that a significant portion of the driving population misinterprets these devices, leading to non-compliance, confusion, and increased crash risk. While engineering improvements have been made to device design, many devices remain complex or inconsistent across jurisdictions, necessitating enhanced driver education. The study specifically aimed to identify which devices are most prone to misunderstanding and to develop targeted recommendations for improving teenage driver education curricula and the Texas Driver Handbook. The methodology for this Phase I study involved a comprehensive review of prior driver comprehension research and the administration of surveys to three key groups: teenage driver education instructors, law enforcement personnel, and teenage drivers entering driver education. The researchers analyzed data from over 1,200 instructors to assess their perceptions of student comprehension difficulties and their current teaching methods. Additionally, surveys of law enforcement officials identified general problems associated with adult driver comprehension. The study also evaluated teenage drivers to pinpoint specific comprehension deficiencies prior to licensure. These findings were synthesized with results from earlier Texas Transportation Institute studies, which had previously identified devices that were "seriously misunderstood" or required improvement, such as specific regulatory signs, warning symbols, and pavement markings. The findings revealed that certain traffic control devices consistently pose comprehension challenges, particularly for teenagers and older drivers. Specific devices identified as needing emphasis in education include two-way left-turn lane signs, HOV restriction signs, "Slower Traffic Keep Right" signs, and various warning signs such as "Slow Down on Wet Road" and "Watch for Ice on Bridge." The study also highlighted confusion regarding pavement markings, such as double yellow lines and solid white lines, as well as complex signal displays like protected turn traffic signals and flashing intersection beacons. The surveys indicated that while instructors recognize these issues, there is a need for more standardized and effective educational materials to address these specific gaps in knowledge. Based on these findings, the report provides detailed recommendations for improving driver education. It suggests that driver education curricula and the Texas Driver Handbook should place greater emphasis on the meaning of specific sign shapes, colors, and the functions of problematic regulatory, warning, and construction signs. The authors recommend incorporating these findings into classroom lectures, self-study materials, and outreach programs. The significance of this work lies in its potential to reduce fatal crashes among at-risk groups, particularly teenagers, by ensuring that drivers possess a clear and accurate understanding of the traffic control system. The report serves as a foundation for developing targeted educational products and programs to bridge the gap between engineering design and driver comprehension.

Key finding

Surveys of instructors, law enforcement, and teenage drivers identified specific traffic control devices, such as certain regulatory and warning signs, as being seriously misunderstood, leading to recommendations for targeted educational improvements.

Methodology

survey

Sample size: 1200

Provenance

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

Topics

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• signage environment
• rail grade crossings
• signaling behavior

Information type

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• Applied Guidance: countermeasure evaluation