Louisiana trailer laws require you to title and register the trailer with the Office of Motor Vehicles, equip it with the lighting, brakes, and safety chains the statutes call for, stay within the state’s size and weight limits, and carry liability insurance on the vehicle doing the towing. The rules sit across state statutes and, for heavier setups, federal regulations, so it pays to work through them in order.
Registering and Titling a Trailer
Trailer titles and registrations run through the Louisiana Department of Public Safety and Corrections, Office of Motor Vehicles (OMV). You apply for a certificate of title on the form the department prescribes, filed directly with the OMV.1Justia Law. Louisiana Revised Statutes 32:707 – Application for Certificates of Title If you bring a trailer in from another state, you have 90 days to register it before the state assesses a road use tax on its value.2Louisiana Department of Public Safety Office of Motor Vehicles. Policy 48.00 Out-of-State Transfers and Reciprocity With Other States
To register, bring a completed Vehicle Application (DPSMV 1799), proof of ownership, and proof of liability insurance on the towing vehicle. For a new trailer, proof of ownership is the Manufacturer’s Statement of Origin. For a used trailer, it’s the certificate of title assigned before a notary by the seller.3Louisiana Office of Motor Vehicles. Used Title and Registration
Fees
Titling costs include a $68.50 title fee, an $8.00 handling fee, and a $15.00 lien recordation fee if you’re financing with a UCC-1 statement ($10.00 for other security agreements).4Louisiana Office of Motor Vehicles. Vehicle Registration, Title and Plate Fees Sales and use tax is assessed on the sale price minus any qualifying trade-in or rebate, at the rate for the parish where the trailer is domiciled.3Louisiana Office of Motor Vehicles. Used Title and Registration
Annual registration depends on the type and weight of the trailer. Standard trailers and semitrailers pay $10 per year. Light trailers, farm trailers, farm semitrailers with a loaded gross weight of 6,000 pounds or less, and boat trailers pay $3 per year, billed in four-year increments. Certain small boat trailers and privately owned trailers with very low axle weight qualify for a two-year cycle instead.5Louisiana State Legislature. RS 47:462 – Trucks and Trailers
License Plate Display
The license plate goes on the rear, securely fastened so it does not swing, mounted at least 12 inches above the ground, and kept clear of any covering or material that would obscure the number. Mounting on a rear fender is allowed if the plate faces rearward.6Louisiana State Legislature. RS 32:53 – Proper Equipment Required on Vehicles; Display of Plate
Homemade and Shop-Made Trailers
A trailer you build from scratch, or have built to your specifications, follows a different path than a factory unit. A homemade trailer is one you constructed from new or used parts that was never previously titled or registered. The essential parts (steel frame, tongue, hitch, and axles) cannot come from a vehicle that already has a serial number, unless you hold a permit to dismantle from the OMV or have a receipt from a licensed dismantler.7Louisiana Department of Public Safety Office of Motor Vehicles. Policy 107.00 – Homemade and Shop-Made Trailers
A shop-made trailer is one built by someone other than a manufacturer to the owner’s specifications. You’ll need a notarized invoice stating the trailer was “built according to specifications” and a notarized affidavit confirming it was not purchased from a manufacturer. If the invoice shows sales tax was collected on parts and labor at the time of sale, no additional tax is due at registration. Both homemade and shop-made trailers must be assigned a serial number by the OMV or State Police. That costs $5 if assigned at a troop location or $10 if assigned in the field.7Louisiana Department of Public Safety Office of Motor Vehicles. Policy 107.00 – Homemade and Shop-Made Trailers
Required Equipment
Lighting
Every trailer has to show lighted lamps between sunset and sunrise, in poor visibility, when the towing vehicle needs its windshield wipers, and inside tunnels. Violating the lighting requirement carries a fine of up to $25, though it is not treated as a moving violation.8Louisiana State Legislature. RS 32:301 – When Lighted Lamps Are Required At minimum, the trailer must have at least one tail lamp on the rear emitting a red light visible from 1,000 feet behind.9Justia Law. Louisiana Revised Statutes 32:304 – Tail Lamps
Brakes
A trailer with a gross weight of 3,000 pounds or more must have brakes the driver of the towing vehicle can apply from the cab. Those brakes also have to engage automatically if the trailer breaks free.10Justia Law. Louisiana Revised Statutes 32:341 – Brake Equipment Required Lighter trailers are not required to have their own brakes, provided the trailer’s total gross axle weight doesn’t exceed 40 percent of the towing vehicle’s gross axle weight.
Safety Chains
Every trailer and semitrailer with a loaded gross weight capacity of up to 6,000 pounds must have safety chains, or an approved equivalent, securely attached to the towing vehicle whenever the trailer is in motion. The chains have to be strong enough to hold the trailer if the primary hitch fails.11Justia Law. Louisiana Revised Statutes 32:384 – Trailers and Towed Vehicles Fifth-wheel connections on truck tractors and converter dollies are exempt. Crossing the chains under the tongue creates a cradle that keeps the tongue off the pavement if the hitch lets go.
Mirrors
The towing vehicle needs mirrors that give the driver an adequate view to the rear. When the trailer blocks the standard rearview mirror, extended towing mirrors are what restore that sightline, and an officer can cite you if your mirrors don’t provide sufficient rear visibility while towing.
Size and Weight Limits
No trailer may exceed 102 inches in width (mirrors and other safety devices don’t count toward that measurement), and no load may project more than 12 inches beyond the vehicle body.12Justia Law. Louisiana Revised Statutes 32:380 – Width; Projecting Loads on Vehicles Maximum height is 13 feet 6 inches. A single vehicle cannot exceed 40 feet in length; a combination on non-designated routes tops out at 65 feet; recreational vehicle combinations may reach 70 feet with no more than two towed units.13Legal Information Institute. Louisiana Administrative Code Title 73 I-503 – Legal Limitations
Total gross weight for any vehicle or combination cannot exceed 80,000 pounds, and cannot exceed the licensed gross weight for that vehicle. The drawbar or other connection between the towing vehicle and trailer cannot exceed 15 feet.11Justia Law. Louisiana Revised Statutes 32:384 – Trailers and Towed Vehicles
If your rig exceeds any of these limits, you’ll need a permit from the Louisiana Department of Transportation and Development. The DOTD issues single-trip, monthly, semi-annual, and annual permits for oversized and overweight loads, and vehicles operating under these permits must carry a certificate of insurance for at least $100,000.14La DOTD. Oversized and Overweight Truck Permits
Insurance
Louisiana’s compulsory insurance law applies to “self-propelled motor vehicles,” so the towing vehicle carries the required liability coverage. The trailer itself is not independently required to carry its own policy under the statute.15Justia Law. Louisiana Revised Statutes 32:861 – Security Required Even so, the OMV wants proof of liability insurance at registration, which in practice is coverage on the vehicle that will pull it.
Minimum liability limits on the towing vehicle are $15,000 for bodily injury to one person, $30,000 per accident when multiple people are injured, and $25,000 for property damage.15Justia Law. Louisiana Revised Statutes 32:861 – Security Required Letting that coverage lapse can bring fines, registration suspension, and vehicle seizure. A false declaration about insurance is a misdemeanor punishable by a fine of $500 to $1,000 or up to 30 days in jail.16Justia Law. Louisiana Revised Statutes 32:864 – Criminal Sanctions for False Declaration
Commercial use may prompt your insurer to require a separate policy on the trailer. For personal use, a call to confirm your auto policy extends to trailer-related incidents is worth making before you need it.
Inspections
Every trailer, semitrailer, and pole trailer registered in Louisiana must carry a valid safety inspection certificate. The statute requires equipment to be in good working order and the vehicle in safe mechanical condition before it operates on any highway.17Louisiana State Legislature. RS 32:1301 – Motor Vehicle Inspection Inspections cover brakes, lights, tires, and the structural integrity of the hitch and safety chain attachment points.
Commercial motor vehicle trailers running in interstate commerce follow the federal annual inspection cycle under 49 CFR 396.17. As an alternative, operators can obtain a Louisiana commercial motor vehicle inspection certificate that satisfies the federal requirement.18Louisiana State Legislature. RS 32:1304 – Inspection of Commercial Motor Vehicles
Penalties for Violations
Operating a trailer that violates the vehicle equipment chapter exposes you to criminal and civil penalties. Criminal penalties range from a fine of $10 to $500, up to six months in jail, or both. The OMV can also impose civil penalties up to $1,250.19Louisiana State Legislature. RS 32:427 – Penalties If a civil fine goes unpaid for 30 days, the OMV can order removal of the vehicle’s license plate. For vehicles not registered in Louisiana, any vehicle you own may be seized.
The larger exposure is civil. If a trailer causes a crash and your maintenance records show a known defect (a bad brake, a missing lamp), that evidence weighs against you in the lawsuit that follows.
When Federal Rules Apply
State registration is only part of the picture once a trailer combination gets heavy or crosses state lines.
Commercial Driver’s License
A Class A CDL is required to drive any combination of vehicles with a gross combination weight rating of 26,001 pounds or more, as long as the towed unit has a gross vehicle weight rating above 10,000 pounds.20FMCSA. Drivers A loaded equipment trailer behind a heavy pickup can cross that line even without any commercial paperwork on the truck itself.
USDOT Number
A USDOT number is required for any vehicle with a gross vehicle weight rating or gross combination weight rating of 10,001 pounds or more operating in interstate commerce, and also for vehicles carrying more than eight passengers for compensation or hauling hazardous materials that require a safety permit.21FMCSA. Do I Need a USDOT Number? Purely intrastate, non-commercial trailer use generally doesn’t trigger this.
Heavy Vehicle Use Tax
The federal Heavy Vehicle Use Tax applies to highway vehicles with a taxable gross weight of 55,000 pounds or more. For a combination, you add the unloaded weight of the truck, the unloaded weight of the trailer, and the maximum load customarily carried. If the total hits 55,000 pounds, the owner files IRS Form 2290 and pays an annual tax starting at $100 and scaling up to $550 for vehicles over 75,000 pounds.22Internal Revenue Service. Instructions for Form 2290 (Rev. July 2026) Most personal trailer setups fall well below this threshold.
Cargo Securement
Federal regulations set the tie-down standards law enforcement uses to evaluate any load on the road, even though they apply most directly to commercial carriers. The securement system has to provide a downward force equal to at least 20 percent of the cargo’s weight when the load isn’t fully contained within the vehicle’s structure, and the aggregate working load limit of all tie-downs on an item must be at least half the item’s weight.23eCFR. 49 CFR Part 393 Subpart I – Protection Against Shifting and Falling Cargo The number of tie-downs required scales with the length and weight of each item, with more tie-downs needed as items get longer or heavier.