Carrier operations
Cargo Securement: Tie-Down Rules and Load Limits
Cargo securement keeps freight from shifting, rolling or falling during a trip. For a trucking business, the job starts with the cargo type and the restraint system, then checks tie-down count, working load limit and inspection timing. The general federal rules below cover interstate commercial vehicle operations; special cargo can require a different method.
By Evan Reid, Founder of Haul Handbook · Updated Sep 7, 2026 · 4 min read
General cargo on commercial motor vehicles in interstate commerce; commodity-specific, state and equipment requirements must also be checked.
Choose the method for the freight
Start by identifying the load. Logs, bundled lumber, metal coils, paper rolls, concrete pipe, intermodal containers, vehicles, machinery and other listed commodities have their own provisions. Apply those provisions where they add requirements to the general rules.
General cargo must be restrained by adequate structures, blocking, bracing, dunnage, tie-downs or a suitable combination. Cargo that can roll needs a means of preventing it. The general section excludes certain bulk materials carried in a vehicle structure that contains them.
An enclosed box truck still needs a load plan. Ask what will stop each pallet during braking and a turn, whether the truck body is designed to contain that load, and whether the shipper has supplied reliable weights. A closed door alone is not a securement plan.
Working load limit: count the attachment correctly
The aggregate working load limit must reach at least half the weight being restrained. A direct tie-down from the vehicle to the cargo counts at half its working load limit. An over-cargo tie-down returning to the same side also counts at half; one running between opposite sides counts at its full working load limit.
Trace every strap or chain from its first attachment to its last. Record the rated capacity and condition of the whole assembly. Do not use a breaking-strength number as the working load limit.
Minimum tie-down count is a separate check
For general articles that are not restrained against forward movement, use the length and weight bands below. A forward-blocked article needs at least one tie-down for each 10 feet of length or fraction. Special-purpose loads needing special methods have a separate exception in the rule.
Worked example: an unblocked crate
This hypothetical load is a general-cargo crate, not a commodity with a special method. It is 8 feet long and weighs 5,000 pounds. Two tie-downs, each with a working load limit of 2,000 pounds, pass over the crate between anchors on opposite sides of the vehicle.
Required aggregate capacity: 5,000 × 0.5 = 2,500 pounds. Supplied aggregate capacity: 2 × 2,000 = 4,000 pounds. The length also calls for two tie-downs. These two checks pass. If both assemblies instead returned to the same side, their aggregate contribution would fall to 2,000 pounds and fail the capacity check.
This calculation does not certify the load. Anchor strength, assembly condition, restraint against movement, edge protection and any cargo-specific method still need review. A loose crate with enough rated straps is still a problem.
Inspect straps, chains, anchors and edges
Securement devices must be fit for use. Tie-downs may not contain knots, must stay fastened in transit, and need edge protection wherever contact with cargo could cut or abrade them. Repairs must follow the applicable standard or manufacturer instructions.
- Match the assembly and attachment points to the load and its intended restraint method.
- Remove damaged equipment from the loading plan and use a sound replacement.
- Check corners and edges before tensioning; place suitable protection where needed.
- Walk around the complete load and check anything that could loosen, settle or roll.
Recheck the cargo during the trip
The driver checks cargo and securement before driving and within the first 50 miles. Rechecks then occur at a duty-status change, after 3 hours of driving, or after 150 miles, whichever occurs first. The rule has exceptions for sealed loads the driver is ordered not to open and loads where inspection is impracticable.
Plan a safe place to stop before setting off. Keep the load instructions available, and resolve a shifted or damaged load before continuing.
Frequently asked questions
Does enough working load limit mean I have enough tie-downs?
- No. Check both aggregate capacity and the minimum count for the cargo. The crate example shows the separate checks and why attachment geometry changes the capacity calculation.
Does a box truck need cargo securement?
- Yes, the general rules cover cargo within vehicles as well as on them. The method depends on the freight and the strength of the structures or restraint system used.
Sources
Primary statutes and official agency pages this guide relies on. Laws and fees change, so confirm against the current source before you act.
- Cargo Securement Rules · FMCSA
- 49 CFR 393.106: General requirements for securing articles of cargo. · FMCSA / eCFR
- 49 CFR 393.110: Additional requirements for determining the minimum number of tiedowns. · FMCSA / eCFR
- 49 CFR 393.104: Standards for cargo securement devices and systems. · FMCSA / eCFR
- 49 CFR 392.9: Inspection of cargo, cargo securement devices and systems. · FMCSA / eCFR
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