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Top 5 Commandments of Oversized Shipments

Flatbed transportation

What does U.S. geography have in common with shipping oversized items? Answer: a lot. Each state has different requirements for oversize shipments, so it’s important to know the legal requirements for each state. For that reason, and many others, navigating the specialized world of flatbed shipments can be tricky, especially when shipping oversized loads like tractors, combines, bulldozers, cranes, steel beams, wind blades or prefabricated homes. When preparing to move any flatbed load it’s important to know the exact dimensions and weight of your shipment in order to plan for the correct type of equipment, and make the delivery according to customer expectations.

  1. Know the legal limits for flatbed loads. The legal limits for shipments are well documented and fairly consistent from state to state in the U.S. This equipment guide outlines the limits for all types of flatbed trailers. In general, the maximum legal load width is 8.5 feet (102 inches) and the maximum height limit is also 102 inches. Legal length is typically 48 to 53 feet and the maximum weight is about 46,000 pounds. Some trucks may be able to scale heavier, but 46,000 pounds is usually the standard. For the specific regulations for each state consult their transportation departments. Click here for a directory of state transportation websites.
  2. Find out if your load is oversized. Weight restrictions are applied on a per axle basis. A shipment might not exceed the total weight limit, but it may exceed the per-axle limits. In this case, simply adjusting the load can make the shipment legal and eliminate the need for special permits. The more common measurement that pushes shipments into the “oversize” category is width. Anything over 8.5 feet wide is considered oversized and shipments exceeding 12 feet wide may require 1 to 2 pilot vehicles in the front and/or back of the flatbed truck. Just remember, flatbed drivers are responsible for obtaining the permits, and they cannot obtain an oversize permit for any load that can be feasibly broken down in size or weight.
  3. Learn the rules for when you need travel escorts. In many states, shipments over 12 feet wide require travel escorts (or “pilot vehicles”). In addition to variable per-mile rates, shippers typically pay for hotels and other incidentals known as accessorials and would be included as part of the overall freight costs. The role of travel escorts is to forewarn flatbed drivers of special circumstances, like accidents, construction zones, bridges, low wires, traffic jams, and other hazards that require careful driving. They also serve in alerting the public of the presence of an oversized vehicle.
  4. Understand factors that will impact your schedule. In most states, oversized loads with travel escorts may only be on the road from 30 minutes before sunrise to 30 minutes after sunset, Monday through Friday. Many states restrict or prohibit driving over holidays or weekends. Before a load hits the road, drivers need permits for each state traveled with exact travel routes specified. All of these factors—especially the drive time restrictions—present unique challenges for shippers trying to maintain schedules.
  5. Know the meaning and requirements for special markings. The size of the item being shipped dictates the necessity of flags or lights on the tractor or trailer. Typically, red flags and amber lights are required for oversized loads to ensure visibility to other traffic. Travel escorts accompanying an oversize shipment are often also required to have flags and or lights.

Thank you for reading and please comment below with any questions you may have about oversized shipments.



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Jade Brunet

Hauling equipment is quite a process and sometimes in extreme situations there is the possibility that the load could be over sized. It is good to know that one should get this checked out before the journey is made. I think that another important factor would be to mark clearly that the truck will be moving slowly and that it is taking up more space than normal.



Luke Smith

I really liked that your first bit of advice was about knowing the rules and limits for flatbed shipments, and I thought your inclusion of a link to those regulations was very helpful and considerate! I imagine that many people leave the shipping of oversize freight to 3rd party companies, but knowing those limits yourself could definitely help you make a good decision about which company to work with. It would make sense to me to hire someone to handle that shipping niche especially if it's not something you deal with on a daily basis.



Zequek Estrada

This provided so much good insight, especially for anyone who might need to rent a tilt tray. I didn't know that each state has different requirements when it came to oversize shipments. It makes me wonder how much planning must go into shipping big loads across state lines must take.



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