A typical tractor-trailer, or semi-truck, in the United States is about 70 to 80 feet long overall. This length includes the tractor unit (the truck cab) and the trailer. The tractor itself usually measures between 20 and 25 feet, while the trailer is most commonly 48 to 53 feet long, with 53 feet being the standard length for dry van trailers
. Some specialized trailers, such as extendable double drops or removable goosenecks, can be longer-up to 80 feet or more when fully extended. Additionally, certain configurations, like double pup trailers or oversized load trailers, can exceed these lengths, sometimes reaching over 100 feet, but these require special permits
. In summary:
- Tractor length: approximately 20–25 feet
- Trailer length: typically 48–53 feet (standard dry van trailer is 53 feet)
- Total length: generally 70–80 feet for a standard tractor-trailer combination
These dimensions can vary based on trailer type, state regulations, and specific truck models
