"Because a solar eclipse is a relatively rare type of planned special event, it can generate large volumes of traffic for which State and local departments of transportation (DOTs) will need to prepare. A solar eclipse is unique in how its path crosses many locations across the Nation. Many people are interested in experiencing a solar eclipse firsthand ... Thus, in addition to increased traffic and potential safety impacts caused by people traveling to experience the solar eclipse, a variety of additional associated local activities, festivals, and events may also be scheduled to coincide with the eclipse that cause additional impacts."
Source: USDOT FHWA Fact Sheet
(Source: U.S. Department of Transportation, Federal Highway Administration)
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A message directed toward August 21, 2017 eclipse viewers but equally as relevant for viewers of the April 8, 2024 event.