Automated enforcement and highway safety : final report.

Herbel, Susan; Retting, Richard; Wemple, Elizabeth · 2013 · ROSA P / Louisiana. Dept. of Transportation and Development

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Summary

This 2013 report, commissioned by the Louisiana Department of Transportation and Development (DOTD), evaluates the effectiveness of Red Light Camera (RLC) programs and aims to improve public support and policy implementation for automated enforcement in Louisiana. The study was motivated by the significant safety threat posed by red light running, which contributes to thousands of fatalities and injuries annually, alongside divided public opinion regarding whether RLCs serve safety or revenue generation. The research objectives included reviewing national literature on RLC impacts, assessing current Louisiana programs, gauging public perception, and developing a guidebook for local jurisdictions. The methodology comprised a comprehensive literature review of domestic and international studies, an evaluation of existing RLC programs in Baton Rouge and Lafayette, and a two-tier public opinion survey. The Tier 1 survey included in-person intercepts at Office of Motor Vehicles branches and a statewide internet survey, yielding over 1,200 responses. A Tier 2 telephone survey provided deeper insights from 50 volunteers. The team also analyzed crash data from Lafayette’s RLC installations and compared Louisiana’s existing policies against national noteworthy practices. Findings from the literature review indicate that RLC programs generally reduce angle and injury crashes, though they may cause a short-term increase in rear-end crashes; however, the economic benefits of reduced severe crashes typically outweigh these costs. In Lafayette, Louisiana, RLC installation resulted in a 33.3% decrease in angle crashes and a net annual savings of approximately $694,000. Public opinion surveys revealed that while most respondents view red light running as a major safety threat, support for RLCs varies. Residents in areas with active programs showed higher support than those without. Key barriers to acceptance included perceptions of revenue generation and lack of clarity on right-turn-on-red violations. The report concludes that RLCs are an effective safety countermeasure when implemented correctly. To enhance public support and program success, the authors recommend modifying state policy to include enhanced public education, additional signage, and clearer guidelines on right-turn-on-red violations. They also advise maximizing local agency involvement in site selection and ensuring that engineering and conventional enforcement measures are exhausted before installing cameras. The study produced a guidebook for local practitioners to facilitate consistent, effective, and publicly supported RLC implementation across Louisiana.

Key finding

Public support for red light camera programs is significantly higher among residents who perceive red light running as a major safety threat, and RLC implementation is associated with reduced angle crashes and violations.

Methodology

survey

Sample size: 1234

Provenance

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

Topics

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• automated enforcement cameras
• regulatory evaluation
• roadway lighting effects

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: crash risk outcomes