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Highway Signs and Prison Labor

Freakonomics Radio

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The Significance of Highway Signage

This chapter examines Bunn, North Carolina, home to the state's main highway sign manufacturer, detailing the production process and economic implications of road signage. It traces the evolution of traffic control devices in America, highlighting the establishment of standardized guidelines under the Manual on Uniform Traffic Control Devices (MUTCD). Additionally, the chapter discusses design choices for improved visibility, including the evolution of materials that enhance nighttime reflectivity for safer driving.

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