Executive Summary
FMCSA requires securement systems to withstand 0.8 g forward deceleration and 0.5 g acceleration in both rearward and lateral directions, applied separately.
The aggregate working load limit of the securement system must be at least half the weight of the article or group being restrained.
General rules apply broadly, while listed commodities such as coils, machinery, logs, paper rolls, concrete pipe, vehicles, and intermodal containers have additional commodity-specific requirements.
The rule is built around movement, not normal driving
Securement must control the load during hard braking, reversing contact, and lateral movement. The required force values are higher than normal cornering because the system must survive foreseeable emergency forces.
The carrier remains responsible for compliant securement, but shippers and brokers influence the equipment choice, commodity description, loading method, weight distribution, appointment pressure, and documentation. A vague tender can create a predictable securement failure.
EvidenceCargo Securement Rules
Working load limit and tiedown count are separate tests
A load can have enough straps and still fail the aggregate working load limit. It can also have enough rated capacity and still fail the minimum tiedown count. Both tests apply unless a different commodity-specific rule controls.
FMCSA's general rule requires aggregate working load limit equal to at least half the cargo weight. For articles not blocked against forward movement, general tiedown counts depend on length and weight, with extra tiedowns as length passes ten feet.
| Article under general rule | General tiedown floor | Other test |
|---|---|---|
| Five feet or less and 1,100 pounds or less | One tiedown | Aggregate working load limit still applies |
| Five feet or less and over 1,100 pounds | Two tiedowns | Aggregate working load limit still applies |
| Over five feet but under ten feet | Two tiedowns | Aggregate working load limit still applies |
| Over ten feet and not blocked forward | Two for first ten feet, plus one for each additional ten feet or fraction | Aggregate working load limit still applies |
| Blocked or braced forward | At least one per ten feet or fraction | Aggregate working load limit still applies |
EvidenceCargo Securement Rules
Commodity-specific rules override the shortcut
FMCSA lists commodity-specific requirements for logs, dressed lumber, metal coils, paper rolls, concrete pipe, intermodal containers, automobiles, heavy equipment, flattened vehicles, roll-on or roll-off containers, and large boulders.
When the cargo falls into one of those categories, the desk should stop using a generic strap-count answer. Equipment, orientation, weight, blocking, coil eye direction, vehicle weight, and other commodity facts can change the required method.
- Use the exact commodity and configuration.
- Confirm gross weight and the weight of individual articles.
- Confirm equipment type and anchor points.
- Identify blocking, bracing, chocks, wedges, cradles, or dunnage.
- Use edge protection where tiedowns face abrasion or cutting.
- Reject damaged or weakened securement components.
EvidenceCargo Securement Rules
The load file should prove the plan and the execution
A securement file has two jobs. Before pickup, it gives the carrier enough information to bring suitable equipment and devices. After loading, it records what was actually used.
For unfamiliar, high-value, heavy, or commodity-specific freight, require a written securement plan and dated photos before release. Photos should show the full load, anchor points, tiedown tags when readable, blocking or bracing, edge protection, and door or tarp condition.
- 1
Describe the commodity, dimensions, individual weights, total weight, and center-of-gravity concern.
- 2
Identify whether a commodity-specific rule applies.
- 3
Confirm trailer type, deck, anchor points, and securement devices.
- 4
Calculate tiedown count and aggregate working load limit.
- 5
Confirm blocking, bracing, dunnage, chocks, wedges, and edge protection.
- 6
Capture load photos before release.
- 7
Record driver recheck expectations after initial movement and during the trip.
- 8
Preserve the plan, calculations, photos, and exceptions in the shipment file.
EvidenceCargo Securement Rules
Recommended actions
- Add dimensions, individual weights, and commodity-specific securement status to every relevant tender.
- Require pre-release photos for heavy, unusual, high-value, and commodity-specific loads.
- Use both tiedown count and aggregate working load limit in the desk check.
Questions worth asking next
- Does the carrier know the weight of each article before arriving?
- Can the shipment file prove what securement was actually used?