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1950: The Launch of a Round-the-Clock Road Test on a “Stretch of Guinea Pig Highway” in Maryland

June 22, 1950 The Highway Research Board (the present-day Transportation Research Board) formally announced the imminent launch of a major highway research project in the Washington, D.C.  metropolitan area. This project would specifically take place in the vicinity of La Plata, a Maryland town about 32 miles (51.5 kilometers) southeast of the nation’s capital. The... Continue Reading →
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Transportation History broke the news on Monday, June 22, 2026.
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