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What is the legal height for vehicles on highways and when does Mn/DOT install clearance signs?

April 26, 2017clearance DOT height highways install Legal mn signs vehicles

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What is the legal height for vehicles on highways and when does Mn/DOT install clearance signs?

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The legal height for vehicles is 13 feet, 6 inches. The low clearance sign is used to warn road users of clearances less than 12 inches above this legal height. Clearance below bridges on freeways is typically 16 feet, 4 inches and overhead mounted signs is 17 feet, 4 inches.