How do I ship flatbed and oversized freight without surprises?
Key Takeaways
- Flatbed surprises almost always start with an incomplete request. Exact dimensions, weight, piece count and how the freight is loaded decide the equipment, the price and whether permits are needed.
- Pick the trailer from the freight, not from habit. Flatbed, step deck, removable gooseneck and other open-deck trailers each fit a different height, length and loading method.
- Agree on tarping, securement materials and loading equipment before booking. Who tarps, who brings the crane or forklift and who supplies dunnage should be written on the rate confirmation.
- The carrier secures the load, but the shipper prepares it. Freight that is crated, blocked and marked with lift points is faster to load and less likely to shift.
- Oversize and overweight loads need permits, and the rules vary by state. Build permit time into the ship date and let the carrier or its permit service confirm the route.
- Wilson, by Cartage, is an AI logistics agent that requests quotes from approved open-deck carriers with the full load details, books with written acceptance and rate confirmation, and tracks each load to delivery.
Why do flatbed and oversized shipments go wrong?
A plant finishes a large machine frame on Thursday. Sales promised the customer it would ship Friday. The logistics coordinator asks a carrier for "a flatbed, one piece, about 20,000 pounds." The carrier sends a 48-foot flatbed. At the dock, the frame measures 10 feet 6 inches tall once it is on the deck, the plant's forklift can't reach the center of the trailer, and nobody has tarps. The truck leaves empty, the carrier bills a dry run and the customer waits another week.
Flatbed and oversized freight goes wrong when the carrier books equipment for a load that doesn't match the real freight, or when loading, tarping and securement were never agreed. Unlike a dry van, where most freight fits on pallets behind closed doors, open-deck freight is shaped by its size, weight and loading method. Every detail you leave out becomes a decision the driver has to make at your dock, usually at your expense.
The fix is not complicated. It's a better request, a clear split of responsibilities and a few days of planning for anything that may need a permit. Shippers that move open-deck freight regularly build these steps into a standard process, so a machine, a bundle of steel or a pallet of pipe ships the same way every time.
What counts as flatbed freight?
Flatbed freight is anything that is easier or only possible to load from the side or from above, rather than through dock doors. Typical examples are steel coils and plate, structural beams, lumber, pipe, building materials, machinery, tanks, vehicles, large crates and prefabricated parts. Some of it fits in a van in theory, but needs a crane or side loading in practice.
When does freight become "oversized"?
Freight is oversized when the loaded truck exceeds the legal width, height, length or weight limits for the roads it travels. Those limits are set by federal and state rules and vary by state and road type, so the honest answer is "check the route." A load can be legal in one state and need a permit in the next. Treat any load that is unusually wide, tall, long or heavy as a possible permit load and ask the carrier to confirm before you promise a ship date.
Why open-deck capacity behaves differently
Open-deck trucks are a smaller share of the market than dry vans, and many of them follow construction and industrial demand. Specialized trailers such as removable goosenecks are fewer still. That means quotes can take longer, prices move more with the season and a last-minute request may not find the right truck. Planning a few days ahead matters more here than for most other freight.
How do you plan a flatbed shipment step by step?
Choose the trailer from the freight, send a complete request, then confirm everything on the rate confirmation. Start with the freight's dimensions and weight, then its loading method, then its protection needs. The trailer that fits all three is the one to request. Equipment names vary a little by carrier, so describe the freight and let the carrier confirm the fit.
| Equipment | What it suits | Main trade-off |
|---|---|---|
| Flatbed | Freight that is not too tall, loaded from the side or top by forklift or crane | Lowest cost and widest availability, but the deck sits higher, which limits freight height |
| Step deck (drop deck) | Taller freight that would be too high on a standard flatbed | Lower deck adds height clearance; the upper step reduces usable length at full height |
| Double drop | Very tall freight that needs the lowest deck possible | Fewer trucks available, shorter well, usually costs more |
| Removable gooseneck (RGN) | Heavy machinery and equipment that drives or rolls on from the front | Specialized and scarce, often tied to permit loads |
| Conestoga | Flatbed freight that needs weather protection without tarping | Rolling cover is convenient, but it limits height and costs more than a flatbed |
| Flatbed with sides or curtain | Freight that needs containment on the sides | Availability varies by region and carrier |
| Hotshot | Smaller, lighter open-deck loads that need to move quickly | Less capacity and weight than a full-size flatbed |
Ask three questions before naming a trailer
First, how tall will the freight be once it is on the deck, including any blocking under it? The deck height of the trailer adds to the freight height, which is why a load that fits on a step deck may be too tall on a flatbed. Second, how will it be loaded and unloaded: forklift from the side, overhead crane, driven on, or rolled on? Third, does it need protection from weather, road dirt or sun? The answers point to a trailer type.
Partial loads on open deck
Not every open-deck shipment fills a trailer. Some carriers combine smaller flatbed shipments, much as LTL carriers combine pallets. Partial loads can cost less than a full truck, but they may add handling and transit time, and the freight has to be loadable alongside other freight. Ask whether the price is for exclusive use of the deck or for a share of it.
What a complete quote request includes
A complete request gives the carrier everything it needs to choose equipment, check permits and price the load once.
The freight itself
- Exact dimensions of each piece: length, width and height, in feet and inches, measured at the widest and tallest points, including anything that sticks out.
- Weight of each piece and total weight. Use scale weights where possible. Estimated weights on heavy freight can push a load over a limit nobody planned for.
- Piece count and how the pieces are packaged: bundled, crated, skidded, on blocks, loose.
- Lift points and center of gravity for machinery or uneven freight, if known.
- Whether the freight can be stacked, tipped or loaded on its side.
Loading and unloading
- How the freight will be loaded at pickup (forklift and its capacity, overhead crane, loading dock, ramp, driven on) and how it will be unloaded at delivery.
- Whether loading is from the side, rear or top, and whether the site has room for a long trailer to turn and park.
- Site hours and contact names for both ends, plus any appointment requirement.
Protection and securement
- Tarping needs: none, lumber tarps, steel tarps, smoke tarps for freight that only needs a cover on the front, or a Conestoga.
- Edge protection, dunnage and blocking: who supplies them.
- Any special securement needs, such as chains instead of straps or specific tie-down points on the freight.
Dates and services
- Ready date, required delivery date and whether either is flexible.
- Extra services: extra stops, escorts if needed, driver assist, tarping, detention terms and layover terms.
Why the request matters for price
Carriers price open-deck freight on more than distance. A load that needs a step deck, eight tarps, chains and a long wait for a crane is a different job from a bundle of steel that a forklift loads in 20 minutes. When those details are in the request, they're in the price. When they aren't, they show up later as accessorials or as a driver who refuses the load. For how extra services become extra charges, see checking accessorial charges before booking.
Confirm it on the rate confirmation
After booking, the rate confirmation should list the equipment type, deck length, tarp requirement, any securement requirement, pickup and delivery appointments, and the terms for detention, layover and cancellation. Read it before the truck is dispatched. If tarps aren't listed, assume the driver won't bring them.
Who handles tarping, securement, loading and permits?
The shipper prepares and loads the freight, the carrier secures it for the road and the receiver unloads it, unless the parties agree otherwise in writing. Most flatbed disputes come from gaps between those three jobs.
Securement is the carrier's job on the road
Federal rules require commercial vehicles to be loaded and secured so cargo doesn't leak, spill, blow or fall off, and is held in place so it doesn't shift in a way that affects the vehicle. In practice the driver chooses and applies the tie-downs, chains, straps and edge protection, and checks them during the trip. A driver can refuse a load that can't be secured safely.
Preparation is the shipper's job at the dock
The shipper can make securement easier and safer. Crate or skid loose items. Band bundles tightly. Mark lift points and the center of gravity. Provide dunnage or blocking when the freight needs it, especially for round or uneven pieces. Remove or secure loose parts on machinery. Freight that arrives at the trailer ready to strap down loads faster, shifts less and is less likely to be damaged. For more on preparing freight, see preventing freight damage before it happens.
Tarping
Tarping is usually done by the driver, often with tarps the carrier owns, and is often billed as a separate line. Ask whether the rate includes tarping, how many tarps the driver will bring and what kind. If the freight is sensitive to moisture, say so, and consider whether a Conestoga is worth the extra cost. Tarping takes time, so allow for it in the loading appointment.
Loading equipment at both ends
The single most common flatbed failure is a truck arriving at a site that can't load or unload it. Confirm the equipment at both ends before booking: forklift capacity and fork length, crane availability and operator, space for the truck to pull alongside, and whether the ground can take the weight. If the receiver is a construction site or a field location, confirm who will be there, what equipment they have and how the truck will get in. A driver can't unload a 15,000-pound piece by hand.
Responsibility split
| Task | Usually done by | What to confirm before booking |
|---|---|---|
| Preparing freight (crating, banding, marking lift points) | Shipper | The freight is ready on the ship date |
| Loading onto the trailer | Shipper | Equipment, capacity and operator at the pickup site |
| Securing the load for transport | Carrier and driver | Chains or straps, edge protection, any special requirement |
| Tarping | Driver, with carrier tarps | Whether tarps are included, how many and what kind |
| Dunnage and blocking | Shipper or carrier, by agreement | Who supplies it and whether it is returned |
| Permits and route | Carrier or its permit service | Permits for every state on the route, travel restrictions |
| Escort vehicles, if required | Carrier, through the permit process | Whether escorts are needed and who pays |
| Unloading | Receiver | Equipment, capacity, operator and site access at delivery |
How do permits for oversized loads work?
Oversize and overweight loads need permits from each state the truck passes through, and the rules, fees and timelines differ from state to state. The carrier or a permit service usually applies for them, but the shipper supplies the dimensions and weight that the permits are based on.
What the permit depends on. A permit is based on the loaded dimensions and weight of the truck, the trailer and the freight together, and on the route. That's why accurate measurements matter so much. If the freight is taller or heavier than the permit says, the load may be stopped, fined or delayed. If you aren't sure of a dimension, measure it again before the quote, not after the permit is issued.
What permits can require. Depending on the state and the size of the load, permits can set the route the truck must take, the days and hours it may travel, signs, flags and lights, and whether escort vehicles must travel with it. Permits can also limit travel at night, on weekends or on holidays. Each of these affects transit time, so a permit load that crosses several states can take longer than a legal load over the same distance.
Build permit time into the ship date. Permits take time to issue, and travel restrictions can add days to the trip. Ask the carrier how long permits are likely to take for the route and when the truck can actually move. Don't promise a customer a delivery date until the carrier has confirmed the route and permits. When sales asks for a date, give them the date after permits, not the date the freight is ready.
Can you avoid a permit? Sometimes. A step deck or double drop can bring a tall load under the height limit. Removing a part of a machine, shipping it separately or turning a piece on its side can bring a load within width limits. These options are worth checking before you accept a permit load, because permits, escorts and travel limits add cost and time. The carrier is the best judge of what is legal and safe for the route.
Which mistakes cause the most flatbed surprises?
Most flatbed problems come from a handful of repeat mistakes, and each has a simple rule that prevents it.
Mistake 1: Estimating dimensions and weight
Guessing low to get a cheaper quote, or using catalog dimensions instead of measured ones, leads to the wrong truck, a missing permit or a re-quote at the dock. Rule: measure every piece, as packaged, before requesting a quote, and include anything that sticks out.
Mistake 2: Asking for "a flatbed" without saying why
The trailer name alone doesn't tell the carrier how tall the freight is or how it loads. Rule: describe the freight and the loading method, and let the carrier confirm the equipment.
Mistake 3: Assuming the receiver can unload
A truck arrives at a jobsite with no forklift, or a customer's forklift can't reach the center of the deck. Rule: confirm unloading equipment and access at delivery before booking, in writing.
Mistake 4: Leaving tarping unstated
The freight needs to stay dry, the driver arrives without tarps and loading stops. Rule: state the tarp requirement in the request and make sure it's on the rate confirmation.
Mistake 5: Cancelling late
Open-deck carriers often turn down other freight to take a load. A late cancellation or a freight-not-ready dry run usually brings a fee. Rule: confirm the freight is complete and ready before dispatch, and cancel as early as possible if plans change. See stopping TONU and dry-run charges for more.
Mistake 6: Promising a delivery date before permits
Sales commits to a date that assumes a legal load, and then the load needs permits and a weekend travel restriction. Rule: no delivery date for a possible permit load until the carrier confirms the route.
Mistake 7: Not photographing the load
When freight arrives damaged or shifted, the first question is how it left. Rule: take photos of the freight as loaded and secured, before the truck leaves, and keep them with the shipment record.
A hypothetical example
Consider a hypothetical equipment maker shipping a 9-foot-tall machine base to a customer 600 miles away. The first request says "flatbed, 18,000 pounds." The carrier quotes a standard flatbed. Before booking, the coordinator checks the loaded height with blocking and finds the machine would sit too high on a standard deck. The request is changed to a step deck, with the measured dimensions, two crane picks, smoke tarps and a delivery contact who confirmed the customer's overhead crane. The rate is higher than the first quote, but the truck arrives right the first time, the load stays under the height that would have triggered permits, and the invoice matches the rate confirmation.
A checklist for every open-deck shipment
Use this checklist before you book any flatbed, step deck or specialized load. It catches most of the gaps that lead to dry runs, re-quotes and surprise charges.
| Check | What "done" looks like |
|---|---|
| Dimensions | Length, width and height of every piece, measured as packaged, including blocking and anything that sticks out |
| Weight | Scale weight per piece and total, or a documented estimate with the source |
| Equipment | Trailer type confirmed by the carrier for the freight height, length and weight |
| Loading at pickup | Forklift or crane, capacity, operator and truck access confirmed |
| Unloading at delivery | Equipment, capacity, operator, access and receiving hours confirmed with the receiver |
| Tarping | Required or not; type and number of tarps on the rate confirmation |
| Dunnage and blocking | Who supplies it, written down |
| Permits | Carrier confirmed whether permits are needed and how long they will take |
| Dates | Ready date and delivery date confirmed after permits and travel restrictions |
| Rate confirmation | Equipment, tarps, appointments, detention, layover and cancellation terms all listed |
| Paperwork | BOL with accurate description, piece count and weight; any special handling notes |
| Photos | Freight photographed as loaded and secured before departure |
Keep a profile for repeat freight
If the same products ship often, keep a profile for each: dimensions, weight, packaging, trailer type, tarp requirement and loading method. Do the same for repeat receivers: unloading equipment, access, hours and contacts. The next quote request takes minutes and starts complete.
Close out with the POD
When the freight is delivered, get the signed POD with any notes about damage or shifting. If there's a problem, the photos from loading, the POD and the delivery notes are the evidence for any claim. See how to file a freight damage claim for the steps.
How does Wilson, by Cartage, help ship flatbed and oversized freight?
Wilson, by Cartage, is an AI logistics agent for manufacturers and distributors that quotes, books, tracks and pays freight, including full truckload open-deck loads, with the company's approved carriers. Traditional logistics software gives teams information. Wilson executes the work required to move shipments forward.
For open-deck freight, Wilson handles the steps where details usually get lost:
- Quoting: Wilson requests quotes from the company's approved carriers with the load details from the order and the product profile, including dimensions, weight, equipment, tarping and loading notes, and compares the answers on total cost.
- Negotiating: Wilson negotiates toward the company's rate targets within approval limits. Rates outside those limits go to the logistics team.
- Booking: Wilson tenders and books the load with written acceptance and a rate confirmation, so the equipment, tarp requirement, appointments and terms are on the record before the truck is dispatched.
- Paperwork: Wilson generates the bill of lading, packing slips and pallet labels from the booked load.
- Pickup and tracking: Wilson schedules the pickup and tracks the load with the best source available: a carrier API or EDI feed, GPS or ELD data where the carrier shares it, the carrier's website, or email and phone calls when nothing else is current.
- Exceptions: if a pickup is missed, a load is cancelled or a delivery slips, Wilson contacts the carrier, tells the team, tells the customer if configured and starts rebooking from the approved carrier list automatically within the rules or after approval.
- Closing out: Wilson requests and files the POD, audits the carrier invoice against the rate confirmation and the POD, and pays the carrier from the Wilson Wallet. Payments above the approval limits or outside the rules wait for a person.
Wilson books only carriers the company has approved. Cartage can suggest additional open-deck capacity, but the company approves each carrier before Wilson uses it. Wilson does not apply for oversize permits or plan routes; the carrier or its permit service handles those, and Wilson keeps the carrier's confirmations with the load. Every message, confirmation and change is kept in the shipment's change history.
Wilson replaces the TMS for freight execution and connects to the company's ERP. Wilson works with SAP, NetSuite, Microsoft Dynamics 365, Oracle, Infor, Epicor, Sage, Acumatica and other ERP environments, with the exact connection depending on the customer's data flow and scope. The team works with Wilson in Slack, Microsoft Teams or email, starting with assisted execution and letting routine steps run automatically within approval limits as the workflow is proven.
Pricing
Wilson is free on Wilson's network: the shipper pays the freight rate and nothing on top. When a shipper keeps its own carriers, the fee is 2% to 0.5% of what Wilson pays them, falling with volume. There are no seat fees, no setup cost and no contract. Timing depends on scope: most teams start on a few lanes and expand from there.
FAQs
How do I ship flatbed and oversized freight without surprises?
Give the carrier exact dimensions, weights and loading details, choose the trailer from the freight, agree on tarping, securement and loading equipment at both ends, and allow time for permits on oversize loads. Wilson, by Cartage, an AI logistics agent, requests quotes from approved carriers with those details and books with a written rate confirmation.
What is the difference between a flatbed and a step deck?
A step deck has a lower main deck than a standard flatbed, so it can carry taller freight within height limits. A flatbed is usually cheaper and easier to find, so it's the default when the freight isn't too tall.
Who is responsible for securing a flatbed load?
The carrier and driver secure the load for transport and must follow federal and state securement rules. The shipper is responsible for preparing the freight so it can be secured, and usually for loading it onto the trailer.
Does the driver bring tarps?
Often, but not always. State the tarp requirement in the quote request and make sure it's on the rate confirmation. Tarping is commonly billed as a separate charge.
How do I know if my load needs an oversize permit?
It depends on the loaded width, height, length and weight and on the states along the route, because limits vary by state. Give the carrier accurate measurements and ask it to confirm before you set a ship date.
Who gets the oversize permits?
Usually the carrier or a permit service working for it. The shipper supplies the dimensions and weight. Wilson keeps the carrier's confirmations with the load but does not apply for permits.
Why was I charged for a dry run on a flatbed load?
A dry run or truck-ordered-not-used fee is charged when a truck is dispatched but can't load, often because the freight wasn't ready, the site couldn't load it or the load was cancelled late. Confirm readiness and loading equipment before dispatch.
What is a Conestoga trailer?
A Conestoga is a flatbed or step deck with a rolling tarp system that covers the freight like a curtain. It protects freight from weather without manual tarping, but limits height and usually costs more.
What should go on the BOL for flatbed freight?
An accurate description, piece count, weight and any special handling notes. The BOL should match the freight that is loaded, because it is the record of what the carrier received.
Can Wilson book specialized trailers like removable goosenecks?
Wilson books the equipment the company's approved carriers offer, through quotes and tenders with written acceptance. If the approved list doesn't include a carrier with the right equipment, Cartage can suggest additional capacity for the company to approve.
Sources
- Code of Federal Regulations, 49 CFR 393.100, "Applicability and general requirements of cargo securement standards": https://www.law.cornell.edu/cfr/text/49/393.100
- Cartage, Wilson product FAQ and product scope, October 2026: https://cartage.ai