About this episode
It takes millions of giant green placards to make America navigable. Where do they come from — and who pays the bill? Zachary Crockett takes the exit. SOURCES: Lee Blackman , general manager at Correction Enterprises. Gene Hawkins , senior principal engineer at Kittelson and professor emeritus of civil engineering at Texas A&M University. Renee Roach, state signing and delineation engineer for the North Carolina Department of Transportation. RESOURCES : " Manual on Uniform Traffic Control Devices for Streets and Highways, 11th Edition ," by the U.S. Department of Transportation Federal Highway Administration (2023). " Who Picks the Businesses on Highway Exit Signs? " by Janet Nguyen ( Marketplace, 2022). " The Road to Clarity ," by Joshua Yaffa ( The New York Times Magazine, 2007). EXTRAS: " Do People Pay Attention to Signs? " by No Stupid Questions (2022). Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.