News Trailer Truths: Farm Trailer Laws Explained

Trailer Truths: Farm Trailer Laws Explained

Trailer Truths: Farm Trailer Laws Explained
December 4, 2025 |

Few issues generate more confusion, and more roadside stops, than trailer tags for farmers. It’s not uncommon to hear from producers who have been ticketed while hauling equipment or crops, even though they believed they were operating legally.

Under Alabama law, most farm utility trailers used exclusively for agricultural purposes do not require registration or a license plate. Knowing where that line is drawn can prevent unnecessary expense and frustration. 

The Law

Ala. Code §32-9-26 provides an exemption from trailer registration and licensing for farmers, custom farmers and other agricultural operators. The exemption from registration only applies to two- to eight-wheeled trailers that are used exclusively for transporting agricultural products to and from the farm or for agricultural purposes related to the operation and maintenance of a farm. 

The determining factor for trailer registration and license plate exemption is the trailer’s use. 

For example, a trailer used to haul a mower to a poultry house to maintain the farm property would fall squarely within the exemption. It’s being used for farm maintenance. However, if that same trailer hauls the mower to church to maintain the church property, it no longer qualifies. In that case, the trailer must be registered and display a license plate. 

Weight Limits and Safety Rules

The registration exemption is also limited by weight. A trailer and its load may not exceed 36,000 pounds total or 10,000 pounds per axle — whichever is less.

Even when exempt from registration, trailers must still comply with certain safety requirements:

  • Reflectors: There must be at least two red reflectors on the rear and one on each side.
  • Width: Trailers may not be more than 10 feet wide. That shrinks to just 102 inches when operated on the interstate.
  • Length: The combined length of the towing vehicle and trailer may not exceed 76 feet.
  • Overhang: Round hay bales may extend up to 1 foot beyond each side of the trailer.

Tax Advantages

Alabama law also provides a reduced sales and use tax rate of 1.5% for trailers used primarily in production or harvesting of agricultural commodities (Ala. Code §45-40-245.31). The standard state sales tax rate is 4%. 

Conclusion

Alabama’s trailer laws are intended to accommodate the unique needs of farmers while maintaining public safety on roadways. The key takeaway is that the trailer registration exemption depends on use.

Farmers who use trailers exclusively for farm operations generally fall within the exemption and do not need a license plate. Understanding the distinction can keep farmers compliant with the law and ensure smoother travel down Alabama’s highways. 


Compiled by Preston Roberts, JD, Alabama Farmers Federation External Affairs Department Assistant Director

The material presented above is for educational purposes only. The content does not constitute legal advice. If readers require specific advice or services, a lawyer or other professional should be consulted.

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