Acronym for state Department of Transportation, particularly Michigan Department of Transportation. Government agency responsible for transportation infrastructure.
Modern acronym from 'Michigan Department of Transportation', formed as state bureaucracies standardized naming conventions in the mid-20th century. Similar patterns exist across all US states.
State DOT acronyms reveal American federalism in miniature - each state jealously guards its transportation authority while following nearly identical organizational structures, creating 50 parallel bureaucracies that barely coordinate with each other.
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