How Tall Is A Semi Truck?

Skip to content Home › How Tall Is a Semi Truck? By Staff WriterLast Updated May 19, 2025 Follow Us: Facebook Twitter

The average height of a semi-truck trailer is 13 feet 6 inches to 14 feet. There are no federal regulations on semi-truck heights, but there are roads that have lower clearances than the average height of a commercial motor vehicle.

The Department of Transportation for each state may impose height limits on semi-trucks and trailers. For example, the California Department of Transportation enforces a maximum height of 14 feet for all semi-trucks. On the other hand, the Pennsylvania Department of Transportation limits semi-trucks to be no taller than 13.5 feet.

The United Kingdom sets the maximum height for semi-trucks at 13.1 feet.

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