Maryland trailer laws require you to title and register every trailer with the Motor Vehicle Administration, pass a state safety inspection if the trailer is used, and equip it with the lights, brakes, and safety chains that match its weight before you tow it on public roads. Annual registration fees start at $55.50 for the lightest trailers and rise with weight. Miss any of these steps and you can be fined, ticketed, or have your plates seized at the roadside.
Titling and Registering a Trailer
Utility, boat, travel, freight, and semi-freight trailers are all subject to the same motor vehicle laws as passenger cars and must be titled and registered through the MVA.1Maryland Department of Transportation Motor Vehicle Administration. Maryland Vehicle Title and Registration Information Office trailers and mobile homes longer than 35 feet are exempt, though they can be titled voluntarily.
You handle titling and registration together at the MVA. Bring proof of ownership: for a new trailer, the Manufacturer’s Certificate of Origin and the dealer’s bill of sale; for a used trailer bought out of state, the out-of-state title in your name (or one properly assigned to you) plus a notarized bill of sale if the trailer is less than seven years old. If the current title is a Maryland title, it doubles as your application. Otherwise, fill out the Application for Certificate of Title (Form VR-005).2Maryland Motor Vehicle Administration. Application for Certificate of Title
You will also owe Maryland’s excise tax. Trailers less than seven years old are taxed at 6% of the purchase price. Trailers seven years old or older are taxed at 6.5% of either the purchase price or a minimum assessed value of $320, whichever yields the higher tax.1Maryland Department of Transportation Motor Vehicle Administration. Maryland Vehicle Title and Registration Information Active-duty military stationed in or near Maryland may qualify for an exemption; the VR-005 explains the documentation.
Annual Registration Fees by Weight
Registration fees are set by Maryland Transportation Code Section 13-927 and are annual, not biennial.3Maryland General Assembly. Maryland Transportation Code Section 13-927 – Trailers and Semitrailers: Class G (Trailer) Vehicles — in General The rates below took effect September 1, 2025 and include a $30 surcharge added July 1, 2025:4Maryland Department of Transportation Motor Vehicle Administration. MVA Fee Listing
- 3,000 pounds or less: $55.50
- 3,001 to 5,000 pounds: $81.00
- 5,001 to 10,000 pounds: $110.00
- 10,001 to 20,000 pounds: $154.00
- Freight or semi-freight trailer: $68.25
Once registered, the plate goes on the rear of the trailer in a clearly visible position.5Maryland General Assembly. Maryland Transportation Code Section 13-411 – Display of Registration Plates and Tabs A missing, obscured, or improperly mounted plate is one of the easiest ways to get pulled over.
Safety Inspection for Used Trailers
Every used trailer being titled and registered in Maryland for the first time must pass a state safety inspection before the MVA will issue a title. New trailers sold by a Maryland dealer are exempt, but any used trailer, whether bought privately, at auction, or brought in from out of state, has to be inspected first.1Maryland Department of Transportation Motor Vehicle Administration. Maryland Vehicle Title and Registration Information If it fails, you cannot register it until the deficiencies are corrected.
Inspectors check lighting, brakes, tires, the hitch and coupling system, and structural integrity. The pass/fail criteria live in COMAR 11.14.05. A missing lamp, non-functioning turn signal, or weakened safety chain will all fail the inspection.6Cornell Law School. Maryland Code Regs. 11.14.05.09 – Lighting
Lights, Brakes, and Safety Chains
Lighting
At minimum, every Maryland trailer needs functioning tail lamps, brake lamps, and turn signals.6Cornell Law School. Maryland Code Regs. 11.14.05.09 – Lighting Turn signals must emit red or amber light and are required on all trailers from 1962 or newer. Trailers from 1972 onward must carry two red or amber stop lamps and two red tail lamps; older trailers need at least one of each.
Federal Motor Vehicle Safety Standard No. 108 layers on more: amber side marker lamps and reflectors toward the front, red side markers and reflectors toward the rear. Trailers shorter than six feet (including the tongue) are exempt from the side marker requirement. Trailers wider than roughly 80 inches also need amber clearance lamps at the front and red clearance lamps at the rear, mounted as near the top as practicable, plus red-and-white conspicuity tape along the sides and across the rear.7eCFR. 49 CFR 571.108 – Standard No. 108; Lamps, Reflective Devices, and Associated Equipment
Brakes
Maryland’s brake rule turns on registered gross weight. A trailer weighing more than 3,000 but not more than 10,000 pounds must have brakes on at least one axle, with an automatic breakaway system that holds for at least 15 minutes if the trailer separates from the tow vehicle. A trailer over 10,000 pounds must have brakes on all wheels, with the same breakaway capability.8Maryland General Assembly. Maryland Transportation Code Section 22-301 – Brake Equipment Required
Whenever a trailer has brakes, the towing vehicle must be able to operate them through a single control, and the truck-and-trailer combination has to brake in coordination.8Maryland General Assembly. Maryland Transportation Code Section 22-301 – Brake Equipment Required
Hitches and Safety Chains
Every trailer with a towbar must be coupled to the towing vehicle’s frame by one or more safety chains or cables. Attaching them to the pintle hook alone does not satisfy the law; the chains have to connect to the frame itself.9Justia. Maryland Transportation Code Section 24-107 The chains exist to keep the towbar off the ground if the primary coupling fails, so inspectors look at whether they are connected properly and short enough to do the job.
The hitch itself must be adequate for the load. Maryland does not spell out hitch strength ratings in pounds; it relies on the general requirement that all coupling equipment be sufficient for the weight being towed. In practice that means matching hitch class, ball size, receiver, and mounting hardware to the trailer.
Weight, Width, and CDL Thresholds
The towing vehicle plus trailer must stay within the manufacturer’s Gross Combined Weight Rating, and the tow vehicle itself has to be rated for the trailer’s weight. Load distribution matters too: an unbalanced load causes trailer sway, one of the leading causes of towing accidents.
On width, federal rules cap most trailers at 102 inches (8.5 feet) on the National Network.10eCFR. 23 CFR Part 658 – Truck Size and Weight, Route Designations – Length, Width and Weight Limitations
A commercial driver’s license is only required when the gross combination weight rating of the tow vehicle and trailer together reaches 26,001 pounds or more. Below that, a standard Class C license is enough, even if the trailer itself weighs over 10,000 pounds. Two exceptions override the weight test: hauling hazardous materials or carrying 16 or more people (including the driver) always requires a CDL.11FMCSA. Is a Driver of a Combination Vehicle With a GCWR of Less Than 26,001 Pounds Required to Obtain a CDL
Maryland does not set a separate lower speed limit for vehicles towing trailers; posted limits apply.
Cargo Securement on Open Trailers
Federal cargo securement rules under 49 CFR Part 393 govern commercial hauling and serve as the practical benchmark for any open trailer. The combined working load limit of your tie-downs must equal at least half the weight of the cargo. If the cargo is not fully contained within the trailer’s walls, the securement system must also provide a downward force equal to at least 20% of the cargo weight to keep it from bouncing or lifting.12eCFR. 49 CFR Part 393 Subpart I – Protection Against Shifting and Falling Cargo
Tie-downs have to be in working order with no damage that reduces their rated capacity. The whole system has to withstand a forward deceleration force of 0.435 g, a rearward acceleration of 0.5 g, and a lateral acceleration of 0.25 g, which roughly translate to hard braking, being rear-ended, and taking a highway curve. Frayed straps, rusted ratchets, and bungee cords on heavy loads all fall short.12eCFR. 49 CFR Part 393 Subpart I – Protection Against Shifting and Falling Cargo
Penalties for Non-Compliance
Most trailer law violations are misdemeanors under the Maryland Vehicle Law. The general penalty is a fine of up to $500, unless a specific statute provides otherwise.13Maryland General Assembly. Maryland Transportation Code Section 27-101 – Misdemeanor – Penalties; Exceptions Missing safety equipment, inadequate brakes, and broken lighting all fall under that umbrella.
Registration violations run on a separate track. Operating an unregistered trailer or displaying an improper plate carries a pre-set traffic citation fine of $290, with a maximum of $500. The MVA can also physically seize plates displayed illegally, including out-of-state plates on a trailer that should be Maryland-registered, and refer the owner for administrative action with fines up to $1,000 per violation and possible license suspension.14Maryland General Assembly. SB 357 Out-of-State Vehicles – Improper Registration Fact Sheet
Officers can inspect your trailer during any traffic stop and cite you on the spot for a burned-out lamp, missing chain, or expired registration. Walk around the trailer before each trip: confirm the lights work, the chains are connected to the frame, the plate is visible, and the registration is current.