Outdoor Advertising Report: Changeable Message Signs

NHTSA · 2018 · ROSA P / California. Department of Transportation

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Summary

This report, prepared by the California Department of Transportation (Caltrans) in 2018, addresses the feasibility of implementing a pilot program for commercial advertising on state-owned Changeable Message Signs (CMS). The study was mandated by Senate Bill 853 to evaluate whether private-sector advertising revenue could fund the construction, maintenance, and operation of next-generation CMS infrastructure. The motivation stems from significant budget constraints; Caltrans currently operates 904 CMS units at an annual cost of $5 million, with a full network upgrade estimated at $322 million in capital costs and $18–30 million annually in operations. The report explores an "advertising-supported" model where private partners assume infrastructure costs in exchange for advertising rights, potentially generating net revenue for the state. The analysis reviews the evolution of outdoor advertising, specifically the shift from static billboards to digital LED signage, which allows for dynamic, time-based messaging and remote content management. It examines existing regulatory frameworks, including the Federal Highway Administration’s Manual on Uniform Traffic Control Devices and the California Outdoor Advertising Act, noting that current laws prohibit commercial advertising on CMS reserved for traveler information. The report proposes a phased, four-year demonstration project involving 25 next-generation CMS units located in high-revenue corridors in Los Angeles, San Francisco, and Sacramento. This pilot would test operational functionality, safety impacts, and revenue generation while maintaining priority for emergency alerts like AMBER and Blue Alerts. The findings indicate that a pilot project is feasible if appropriate federal and state waivers are obtained. The proposed 25-sign pilot would cost $10.2 million to build and $500,000 annually to operate, costs anticipated to be fully recovered through advertising revenue. The project is projected to generate average net revenue for Caltrans between $8.5 million and $10.2 million over the four-year period. However, the report identifies significant barriers, including the lack of current legal authority, potential safety concerns regarding driver distraction, and the need for community approval. It emphasizes that safety is paramount; any pilot must ensure that advertising does not interfere with critical safety messages or emergency alerts, and advertising would be immediately discontinued if safety issues arise. The significance of this report lies in its detailed roadmap for transforming public transportation infrastructure into a revenue-generating asset. It provides specific recommendations for regulation, display configuration, systems management, and operator procurement to mitigate risks. By outlining a structured approach to integrating commercial advertising with public safety messaging, the report offers a potential solution to the funding gap for intelligent transportation systems. It concludes that while the financial benefits are substantial, the initiative requires careful regulatory navigation and rigorous safety monitoring to ensure it aligns with public interest and transportation goals.

Key finding

A four-year pilot project displaying commercial advertising on 25 changeable message signs is projected to generate net revenue of $8.5 million to $10.2 million for Caltrans while fully recovering construction and operational costs.

Methodology

modeling

Provenance

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Topics

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• external distraction
• signage environment
• visual
• ehmi external hmi
• vru facing ehmi
• sign visibility legibility