How do I secure cargo to pass a DOT inspection?

Chapter 01

What do the cargo securement rules ask of me as the owner?

They ask that every load be held in place. It must not leak, spill, blow or fall off, or shift enough to make the truck unstable (the rule on what securement must do). Most owners call these the DOT cargo securement rules. They cover trucks, tractors and their trailers. And they make the job yours, not only your driver’s. A carrier “may not require or permit” a driver to drive unless the cargo is “properly distributed and adequately secured” (the cargo check rule). So you choose the gear your trucks carry and the habits your drivers follow.

Here is how that looks in real life. Say you run two trucks. One pulls a dry van. The other pulls a flatbed 48 feet long. On Tuesday, October 13, 2026, the flatbed leaves a warehouse at 6 in the morning with three wooden crates of steel shelving. Each crate is 12 feet long and weighs 8,000 pounds, so the whole load weighs 24,000 pounds. The first crate sits against the headerboard, the solid wall at the front of the deck. The second sits tight behind it. The warehouse crew puts the third crate farther back, over the trailer axles, to spread the weight. That leaves an empty space in front of it.

About 90 miles later, your driver is pulled in at a scale for an inspection. The officer finds trouble on the rear crate. Its only strap crosses a sharp metal corner with nothing under it, and the strap has a cut. The strap has no tag, and neither do the two chains hooked from the deck to brackets on the sides of the crate. And your driver has not stopped once to check the load since he left. How he should behave from the moment he is stopped is in what to do when your truck is pulled over.

The officer decides the load cannot go on as it is and puts the truck out of service. Federal rules call for that when a truck’s “mechanical condition or loading” would likely cause a crash or a breakdown (the inspection rule). Nobody may drive it until the problem is fixed. The list of exact problems that stop a truck on the spot is called the out-of-service criteria. CVSA, the alliance of inspection agencies that writes the list, sells it as a paid book, so we could not check its details.

This is a common way to lose a day. Cargo securement was the vehicle focus of CVSA’s International Roadcheck on May 12 to 14, 2026. Across North America, inspectors found 1,724 securement problems serious enough to stop the vehicle. That was about one in eight of all such vehicle violations, the fourth most common kind (CVSA’s 2026 results). Each violation also goes on your company’s record. FMCSA counts load securement in the Vehicle Maintenance part of your safety scores, which most people call CSA scores (FMCSA’s scoring manual).

What must the gear hold? The rules set the forces. In a hard stop, a load pushes forward with a force equal to 80 percent of its weight. When the truck speeds up or turns, the load can push back or sideways with half its weight. The straps, chains and anchor points must take those forces without breaking (the rule on the forces). Freight that sits on an open deck must also be held down with a force of at least 20 percent of its weight. A van can meet the rule in a simpler way, as you will see below.

These general rules cover crates, pallets, boxes and most other freight. Some freight has extra rules of its own: logs, lumber, metal coils, paper rolls, concrete pipe, containers, vehicles, heavy machinery and large boulders. The general rules still apply to those loads, and where the extra rules ask for more, the stricter requirements apply (the general securing rule). Hazardous materials have their own loading rules too, and this page does not cover them.

Chapter 02

Which straps and chains can I use, and what is a working load limit?

Use straps and chains made to the industry standards the rule names, and keep them in good condition (the rule on securement gear). Buy them marked with their working load limit. That is the most weight a piece of gear may carry in normal use, usually set by its maker (the rule’s definitions). You will see it on the tag as WLL. The marking matters, because unmarked gear is assigned a default rating from the rule’s tables, which is often lower.

Back at the scale, look at what your driver carries. The tags on his new straps read 5,400 pounds, and a marked strap counts for what its tag says (the rule on working load limits). The old strap on the rear crate has lost its tag. For unmarked straps, the table goes by width. A strap 2 inches wide counts as 2,000 pounds, and one 4 inches wide counts as 4,000. So his old strap, 4 inches wide, counts as 4,000 pounds, not 5,400.

Missing markings can make an even bigger difference with chains. A chain with no grade mark counts as the weakest grade in the table, grade 30 proof coil. For chain with links 3/8 inch thick, that is 2,650 pounds. The same size in grade 70 transport chain counts as 6,600 pounds, but only if it is marked. The grade is marked on the chain, and for grade 70 the table shows the mark as 7, 70 or 700.

A tiedown is only as strong as its weakest part. Its WLL is the lowest limit of any piece in it, including the ratchet or winch and the hooks. If the anchor point it hooks to is rated lower, that lower figure counts (the rule on working load limits). So a strap tagged 5,400 pounds on a winch rated lower is limited to the winch’s rating.

Condition matters as much as the tag. Gear with a cut, a crack or other damage that weakens it may not be used at all (the rule on securement gear). No knots are allowed in a tiedown. A repair must follow the standard or the maker’s instructions. Every tiedown must be fastened so it cannot come loose or open on the road. And where a strap touches an edge that could wear it or cut it, you need edge protection. The rule says it “must resist abrasion, cutting and crushing”. So the cut strap on your rear crate counted for nothing, and the missing corner protector is what cut it.

Two more rules apply to the gear. Your driver must be able to tighten each tiedown on the road, and ratchets and winches allow that. Steel banding is the one exception (the rule on adjustable tiedowns). And the trailer itself counts as gear. The deck, headerboard, stakes and anchor points must be strong enough, with no cracks or cuts that weaken them (the rule on securement gear). Blocks, dunnage and load bars must not be damaged either.

This is where you, the owner, decide the outcome. Buy straps and chains with tags and grade marks. Throw out anything cut or damaged. Put edge protectors on every truck. And tell your drivers to count only what is marked.

Chapter 03

How many straps does DOT require for my load?

Two rules decide it, and the load must pass both. The first counts tiedowns by the length and weight of each piece (the rule on how many tiedowns). The second adds up their ratings. Together they must reach at least half the weight of the piece or group they hold (the general securing rule). The rule calls that total the aggregate working load limit. A load that falls short on either check breaks the rule.

The count depends on whether anything blocks the piece in front. That can be the headerboard, a bulkhead, or other cargo that is itself secured. Here is the minimum for some common sizes, from the same rule:

The rule behind the table is simple. With nothing in front, a piece longer than 10 feet needs two tiedowns. Add one for every 10 feet, or part of 10 feet, after the first 10. With a block in front, a piece needs one tiedown for every 10 feet of length, or part of 10 feet. One more line, in the general securing rule, matters if you haul pallets two across. Pallets side by side under the same straps must touch, or something must keep them from sliding together (the general securing rule).

Now count your crates. The rear crate is 12 feet long, and the empty space means nothing blocks it in front. It needs two tiedowns for the first 10 feet and one more for the last 2 feet: three in all. The front crate sits against the headerboard, and the middle crate against the front crate, which is secured. Each is blocked, so each needs two. The whole load needs at least seven tiedowns. And the headerboard can only do that job if it is strong and undamaged.

Then the weights. Each crate weighs 8,000 pounds, so the tiedowns on each must add up to at least 4,000 pounds. How much a tiedown adds depends on how it runs. A strap thrown over the crate from one side of the trailer to the other adds its full WLL. A tiedown that runs from the trailer to a point on the crate, like your chains to the brackets, adds only half. So does one that goes over or around the crate and comes back to the same side (the general securing rule).

At the scale, the rear crate had one cut strap, which counts for nothing, and two unmarked chains to its brackets. Each chain counts as 2,650 pounds, and only half of that, 1,325, goes into the total. Together they give 2,650 pounds, short of the 4,000 the crate needs. The crate also had two working tiedowns where it needed three. Had the chains been marked grade 70, each would have added half of 6,600, or 3,300 pounds. The two would pass the weight test with 6,600, but still fail the count.

Your driver fixes it at the scale. He throws three new straps over the rear crate from one side of the trailer to the other, with a protector on each corner. Their tags read 5,400 pounds, so together they give 16,200, four times what the crate needs. The two front crates already have two such straps each, 10,800 pounds apiece. The whole load now has seven marked straps rated at 37,800 pounds in all, against the 12,000 it needs. With the load secured, the truck can roll again.

Your van works differently. Its walls can do the job. Each piece must sit against a wall or other freight, or close enough that it cannot shift or tip (the rule on the forces). The danger is empty space. Say the van leaves the same week with 16 pallets of canned food, 2,000 pounds each. They fill only the front 32 feet of a trailer 53 feet long, so the last row has nothing behind it. The rules let you close that space with load bars, with blocking and bracing, or with dunnage bags (the general securing rule). Dunnage bags are air bags that fill the gaps, and load bars are what the rule calls shoring bars. Your driver sets two load bars tight behind the last row. Then the shipper seals the doors. The tiedown count applies only when tiedowns are used. So a van load held by its walls and load bars has no strap count to meet (the rule on how many tiedowns).

Chapter 04

When must the load be checked, and what has changed?

Your driver checks the load and its tiedowns before he drives, and again within the first 50 miles (the cargo check rule). After that, he checks whenever he changes his duty status, or after 3 hours or 150 miles of driving, whichever comes first. At each check he tightens straps or adds more if needed. A driver need not open a sealed trailer he was told not to open. Nor must he check a load packed so that checking it is not practical. The load must still be secured.

Your flatbed driver skipped the check within the first 50 miles on October 13. That made four failures in one load. A strap was cut on a bare edge, the gear had no marks, the tiedowns were too few, and nobody checked early. From the scale on, he checks the load at each fuel stop and each break, because each is a change of duty status. Between stops, he checks every 150 miles. If he averages more than 50 miles an hour, the 150 miles come before the 3 hours.

The sealed-trailer exception removes the duty to inspect the load on the road, but the load must still be secured. Your van driver was told not to break the seal, but the rule still forbids you both to run a load that is not secured. It makes no exception for a load the shipper put on or sealed. So have him look at the pallets and the load bars before the doors close, and take photos. Nothing in the rule asks for a written note of each check. A note with the time and the mile marker simply lets you see that the checks happen. Making every driver do them is covered in our guide to preventing driving violations.

The inspection itself is not over at the scale. Within 15 days, you sign the report to certify that every violation on it was fixed. You keep a copy for 12 months (the inspection rule). Since July 22, 2026, you send the signed report back only if the State asks for it (the June 2026 rule). Before that, the rule told carriers to return it. If the same inspection found brake, light or tire problems, see the defects that put a truck out of service. And if a violation on the report is wrong, say a marked strap written up as unmarked, ask for a correction through DataQs.

A new carrier has one more reason to care. Say its trucks are inspected three times or more within 90 days. If half or more end out of service, FMCSA can order an early audit or ask for proof of fixes (the rule on early audits). With two trucks, two loose loads in three inspections is enough. The audit itself is explained in our guide to the new entrant safety audit.

What has changed? Less than you might think. On November 18, 2024, FMCSA rewrote the headings of these rules from questions into plain titles. It said the text under them stayed the same (the November 2024 rule). An older guide may quote a heading like “What else do I have to do to determine the minimum number of tiedowns?” That is the same rule under its old name. The government’s online code also shows a February 2026 date on the rule that counts tiedowns. We compared its text before and after that date, word for word, and found no change. We found no Federal Register notice that changed it either. Its wording dates from 2006.

There are also things we could not check. FMCSA publishes its own pages on cargo securement and a handbook for drivers. Its website blocks our tools, so this page rests on the rules themselves. And because CVSA sells its out-of-service criteria, we cannot tell you which problems stop a truck on the spot.

If you want someone to keep your inspection reports, repair dates and DataQs requests in order all year, here is what we offer.