What length is allowed for a truck's trailer without requiring a special permit?

A truck's trailer length that does not require a special permit is governed by federal and state regulations. In California, a trailer can be up to 28.5 feet long without needing any additional permits. This standard ensures that trucks operating under these length limits are compliant with the overall vehicle size regulations, which are designed for safety on highways and roads.

Trailers that exceed this length, such as those measuring 30 feet or 32 feet, would require special permits due to the potential for increased risks, including difficulty in maneuvering and increased potential for accidents. The regulations are intended to help maintain safe road conditions for all vehicles.