Livestock Trailer Requirements in Minnesota: What Every Hauler Needs to Know

Whether you raise cattle on a family farm or haul hogs commercially across the state, understanding Minnesota’s livestock trailer requirements is essential before you pull out of the driveway. The rules governing registration, weight, driver licensing, and vehicle inspections can vary significantly depending on how you use your trailer, how heavy your load is, and whether you cross state lines.

Getting these details right protects you from costly fines, keeps your animals safe during transport, and ensures you stay on the right side of both state and federal law. This guide walks you through every major requirement so you can haul with confidence.

Livestock Trailer Registration and Identification Requirements in Minnesota

Registration requirements for livestock trailers in Minnesota depend heavily on how the trailer is used and how much it weighs. Not every trailer needs a license plate, but that does not mean you can skip the paperwork entirely.

Small farm trailer exemption: Minnesota does not require registration if your livestock trailer qualifies as a small farm trailer. To qualify, it must have a gross weight of less than 10,000 pounds, be drawn by a passenger automobile or farm truck, and be used exclusively for transporting agricultural products from farm to farm and to and from the usual marketplace of the owner.

General trailer registration rule: Minnesota requires every trailer on a street or highway to be registered with the state, though only trailers over a specific weight require a title. If your trailer is more than 3,000 pounds, registration will be based on weight, and your registration will expire and need to be routinely renewed.

Titling thresholds: Utility, boat, and snowmobile trailers with a GVWR under 4,500 pounds do not need a title in Minnesota unless there is a lien. Farm trailers and commercial livestock trailers follow separate rules, and you should confirm requirements with the Minnesota Department of Public Safety.

Pro Tip: When registering a new trailer, bring personal identification, your insurance company name, policy number, and the policy expiration date to your local deputy registrar.

USDOT number and carrier identification: If you operate only in Minnesota and your vehicle or combination GVW is greater than 10,000 pounds, you must have a USDOT number if the power unit’s GVW or GVWR exceeds 10,000 pounds, and that number must be displayed on the power unit along with the carrier name.

Covered Farm Vehicle (CFV) designation: A vehicle that transports agricultural commodities or livestock qualifies as a Covered Farm Vehicle when the GVW is 26,001 pounds or less and is operated anywhere in the United States, or when the GVW exceeds 26,001 pounds and is operated wholly within its state of registry or within 150 miles of the farm when crossing state lines. The CFV self-designation form must be carried in the vehicle and displayed upon demand by enforcement personnel.

If you haul livestock for hire rather than for your own farm operation, you are subject to commercial carrier regulations and should consult the Federal Motor Carrier Safety Administration for applicable federal rules. You may also find it helpful to review livestock disease reporting requirements that can accompany animal transport documentation.

Structural and Safety Standards for Livestock Trailers in Minnesota

Minnesota law sets clear structural and safety standards that your livestock trailer must meet before it goes on the road. These requirements cover lighting, braking, safety chains, and basic construction.

Lighting requirements: Trailers made in 1960 or later must be equipped with at least two rear lamps and two reflectors. The rear lamps should emit red light visible at least 500 feet behind the trailer. Trailers made before 1960 only require one rear lamp. Reflectors must be positioned 20 to 60 inches from the ground and be visible from at least 300 feet away.

Minnesota requires trailers to have proper lighting, including taillights, brake lights, license plate lights, and turn signals. Reflectors are also essential to ensure visibility for other drivers, particularly at night or in poor weather conditions. This equipment must be functional and positioned to clearly indicate your trailer’s presence, length, and width.

Brake requirements: Trailers weighing over 3,000 pounds must be equipped with brakes for safe towing. If the trailer detaches from the towing vehicle, the trailer’s braking system must automatically engage to stop the trailer.

Safety chains: Minnesota law mandates the use of safety chains to secure your trailer to your towing vehicle. These chains act as a backup connection if the main hitch fails, keeping your trailer connected to your vehicle and minimizing the risk of a runaway trailer.

Rearview visibility: Any trailer that obstructs the view from the tow vehicle, particularly behind the vehicle, must have a rearview mirror that allows the driver to see at least 200 feet behind the trailer.

Important Note: Vehicles operated under Minnesota’s combination vehicle provisions must conform to the standards prescribed by the United States Department of Transportation, Federal Highway Administration, Bureau of Motor Carrier Safety, as amended.

Wheel flaps and fenders: The trailer must be designed for its intended use, and if it lacks fenders, wheel flaps are required. This is especially relevant for open livestock trailers where mud or debris could be thrown onto other vehicles.

For additional context on how livestock transport safety intersects with animal health compliance, see this overview of livestock disease reporting in Colorado as a comparison to Minnesota’s approach.

Size, Weight, and Load Limits for Livestock Trailers in Minnesota

Minnesota enforces strict size and weight limits on all trailers, including livestock trailers. Knowing these limits helps you plan loads correctly and avoid overweight penalties.

Length limits: A single trailer cannot exceed 45 feet in length, including the tow bar assembly. The combined length of the trailer and towing vehicle must not exceed 60 feet. Minnesota limits the length of a semi-trailer to 53 feet.

Height and width limits: The width of vehicles is limited to 102 inches, with the total height not to exceed 13 feet, 6 inches.

Gross weight limits: Federal and state regulations limit Gross Vehicle Weight to 80,000 pounds. Single axles cannot bear a weight greater than 20,000 pounds, with tandem axles limited to 34,000 pounds. Gross weights in excess of 80,000 pounds require an overweight special transportation permit.

10-ton route designation: All paved routes in Minnesota are 10-ton routes unless posted with a sign indicating a lesser axle weight limit. County roads and township roads may have lower posted limits, so always check before hauling heavy loads on rural routes.

Key Insight: Minnesota enforces seasonal spring road restrictions that reduce allowable axle weights on many roads during the spring thaw period. Livestock haulers should monitor MnDOT postings each spring to avoid violations on restricted routes.

Oversize and overweight permits: A vehicle that exceeds legal sizes or weights is defined as an oversize or overweight vehicle. Prior to movement, you must obtain an Oversize/Overweight Transportation Permit from the road authority that owns or operates the roadway you wish to travel on. For interstate or state trunk highways, the road authority is MnDOT. For local roads, the road authority can be the county, city, township, or municipality.

Loading chute trailer exception: A farm truck or livestock carrier may draw one additional two-wheel trailer, the loaded weight of which does not exceed 3,000 pounds, for the sole purpose of transporting a livestock or poultry loading chute. This exception does not apply in the seven-county metropolitan area.

For a broader look at how Minnesota compares to other states on agricultural transport rules, the Minnesota Commercial Truck and Passenger Regulations handbook from MnDOT is a useful reference.

Ventilation, Flooring, and Animal Space Requirements in Minnesota

Proper trailer design is not just about road safety — it directly affects the welfare of the animals you are hauling. Minnesota follows federal standards for the humane transport of livestock, and your trailer must be built and maintained in a way that protects the animals inside.

Ventilation: Livestock trailers are designed for safely moving animals and must be equipped with secure compartments, ventilation systems, and loading ramps. Adequate ventilation ensures livestock welfare during transit to markets or pastures, reducing stress-related losses. Proper airflow prevents heat stress in summer and moisture buildup in winter, both of which can cause serious harm to animals in transit.

Flooring: The floor of your livestock trailer must provide secure footing to prevent slipping and injury. Non-slip flooring surfaces — such as grooved metal or rubber matting — are standard in compliant trailers. Floors must also be structurally sound and free of holes or sharp protrusions that could injure hooves or legs. The FMCSA’s regulations under 49 CFR Part 398 set federal standards for the humane transport of livestock that apply to commercial haulers operating in interstate commerce.

Animal space and loading density: Overcrowding animals in a trailer is both a welfare concern and a legal liability. Livestock must have sufficient space to stand in their natural position and to maintain balance during transport. While Minnesota does not publish a single prescriptive square-footage table for each species, the general standard under federal and state law is that animals must not be loaded so densely that they cannot stand upright, turn, or maintain their balance.

Common Mistake: Overloading a trailer to save trips is one of the most frequent compliance errors. Crowding animals increases the risk of injury, heat stress, and weight violations simultaneously — all of which carry separate penalties.

Cleanliness and sanitation: If transport rules of the Minnesota Board of Animal Health have not been complied with, transportation companies must notify the board and hold the animals at the first station within Minnesota where there are suitable facilities for holding animals or poultry for inspection. The inspection must be at the owner’s expense. Keeping your trailer clean between loads is not just good practice — it is part of your legal obligation to prevent disease spread during transport. See our guide on livestock disease reporting in Illinois for a comparison of how neighboring states handle this issue.

Civil liability for violations: A transportation company, the owner or driver of a vehicle for hire, or a private vehicle used to haul livestock that violates Minnesota’s livestock transport statutes is liable in a civil action to a person injured for the full amount of damages that may result from the violation.

CDL and Driver License Requirements for Hauling Livestock in Minnesota

Whether you need a Commercial Driver’s License to haul livestock in Minnesota depends on the combined weight of your truck and trailer, and whether you are hauling for personal farm use or for commercial hire.

CDL thresholds: In Minnesota, you do not need a CDL unless your combined vehicle and trailer weight exceeds 26,000 pounds. More specifically:

• A Class A CDL is required for a combined gross vehicle weight over 26,000 pounds.
• A Class B CDL is required if the combined GVW exceeds 26,000 pounds but the trailer weight is under 10,000 pounds.

Commercial motor vehicle definition: Commercial motor vehicles are defined as any vehicle with a GVW or combination GVWR over 10,001 pounds that meets one of the applicable commercial use criteria. If the combination of your truck’s GVW or GVWR and your trailer’s GVW or GVWR exceeds 10,001 pounds, it could be a commercial motor vehicle. If it does not, it is not a commercial motor vehicle.

Personal farm use exemption: If you take your truck and trailer to haul your personal horses or livestock for a personal, nonbusiness-related purpose such as trail riding or a personal vacation, it is not considered a commercial motor vehicle. You are exempt for those days. The same logic applies to farmers hauling their own animals for non-commercial purposes within applicable weight thresholds.

Medical cards and physical requirements: Farmers and their drivers generally do not need to carry medical or health cards. However, drivers of combination vehicles involved in certain commercial operations may be required to do so.

DOT number for interstate commerce: For interstate commerce, if your combined GVW is over 10,000 pounds, you will need a DOT number.

Pro Tip: You can find your truck’s GVWR on the manufacturer’s label inside the driver’s door or door jamb. Always use the higher of the GVW (actual weight) and GVWR (manufacturer’s rated maximum) when determining whether CDL or commercial motor vehicle rules apply to your combination.

If you haul livestock across state lines into neighboring states, be aware that license and weight rules can differ. Our guides on livestock disease reporting in Michigan and livestock disease reporting in Colorado can help you understand what additional documentation may be required when crossing borders.

Inspection and Maintenance Requirements in Minnesota

Minnesota requires commercial livestock haulers to keep their vehicles in safe operating condition and to submit to both scheduled annual inspections and unscheduled roadside inspections.

Annual inspection requirement: Transport vehicles must show proof of an Annual Inspection performed by a Minnesota Certified Inspector. A required inspection may be performed only by an employee of the Department of Public Safety or MnDOT who has been certified by the commissioner of public safety after receiving training provided by the State Patrol. This annual inspection applies to vehicles that meet the commercial motor vehicle definition.

Roadside inspections: Minnesota State Patrol creates inspection reports during the roadside inspection process, documents the inspection, identifies any violations discovered, gives a copy of the report to the driver, and submits an electronic report to the FMCSA. The FMCSA’s Compliance, Safety, Accountability (CSA) program uses data from these inspection reports to improve safety and prevent commercial motor vehicle crashes, injuries, and fatalities.

Pre-trip inspection best practices: Before you begin any trip, conduct a pre-trip inspection. Check the trailer’s connection, ensure all lights are working, test the brakes, and confirm the cargo is secure. Proper preparation can help you avoid accidents and comply with Minnesota’s trailer towing laws.

What inspectors check: During a roadside or annual inspection, officers will typically verify:

• Brake function and brake adjustment on all wheels
• Lighting systems including brake lights, turn signals, and reflectors
• Safety chain integrity and hitch connection
• Tire condition and inflation
• Structural integrity of the trailer floor, walls, and gates
• Load securement and cargo containment
• Driver documentation including license class and medical card if required

Electronic Logging Devices (ELDs): Electronic Logging Devices are governed by a federal rule that states no driver shall operate a commercial motor vehicle while the driver’s ability is impaired. Commercial livestock haulers who are not exempt under the agricultural exemption may be subject to ELD requirements for hours of service tracking.

The Minnesota Department of Public Safety roadside inspection page provides current guidance on what to expect during an inspection stop. You can also challenge errors on your inspection report through the FMCSA DataQ system.

Penalties for Non-Compliant Livestock Trailers in Minnesota

Operating a non-compliant livestock trailer in Minnesota can result in financial penalties, vehicle impoundment, and civil liability. Understanding the penalty structure helps you appreciate why compliance is worth the effort.

Overweight penalties: Minnesota uses a tiered fine structure for overweight violations. If your trailer exceeds weight limits by over 5,000 pounds up to 7,000 pounds, the fine is $310 plus 15 cents per pound for every pound over 5,000. If you exceed limits by over 7,000 pounds, the fine is $610 plus 20 cents per pound for every pound over 7,000. These fines can escalate quickly on a heavy livestock load.

Oversize and overweight permit violations: Any vehicle that exceeds legal sizes or weights without an Oversize/Overweight Transportation Permit is in violation of Minnesota law. You must obtain the permit prior to movement from the road authority that owns the roadway you wish to travel. Operating without a required permit can result in fines on top of the per-pound overweight penalties.

Civil liability for improper transport: Under Minnesota Statute 35.165, a transportation company, the owner or driver of a vehicle for hire, or a private vehicle used to haul livestock that violates livestock transport statutes is liable in a civil action to a person injured for the full amount of damages resulting from the violation. This means that beyond government fines, you could face private lawsuits if improperly transported animals cause injury or property damage.

Important Note: The FMCSA sets nationwide standards for motor carriers, including farm trucks. While these regulations address driver qualifications, vehicle maintenance, and hours of service, farm trucks benefit from tailored exemptions for agricultural use. Despite these exemptions, basic safety and maintenance standards must always be met.

Out-of-service orders: During a roadside inspection, a Minnesota State Patrol officer can place your vehicle out of service if it fails to meet minimum safety standards. An out-of-service vehicle cannot be moved until the violations are corrected, which can mean significant delays, missed market appointments, and animal welfare concerns.

Registration and identification violations: Operating a trailer that requires registration without valid plates or failing to display a required USDOT number can result in separate citations. State and local trailer requirements are always subject to change, so you should confirm that your trailer meets current regulations before you begin towing.

Staying current on Minnesota’s agricultural transport rules is the most effective way to avoid penalties. The Farm Bureau of Minnesota Agriculture Transportation Handbook is an excellent resource that compiles state and federal statutes in one place. You can also review how other states handle livestock transport compliance, such as our guides on brand inspection requirements in Washington and livestock disease reporting in Florida, to understand the broader regulatory landscape when hauling across state lines.

If you have questions about whether your specific setup triggers commercial carrier rules, contacting the Minnesota Department of Public Safety’s Commercial Vehicle unit directly is always the safest approach. You may also find our guide on livestock guardian dogs useful if you are managing animals on the farm side of your operation.