A flatbed truck traveling 70 miles per hour on the interstate sheds a steel pipe.
It bounces once, twice, and lands in the far right lane. The car traveling behind the truck has a fraction of a second to react. If the car swerves right, it will clip the guard rail. If the car brakes hard, the driver behind may not have time to stop.
This is not a hypothetical scenario; it is the predictable outcome of cargo securement failures that put unsecured loads onto American highways every day. A mattress slides off a pickup bed. A bundle of lumber breaks free from a flatbed. A refrigerator rolls out of an open trailer. Each one becomes a projectile in a stream of vehicles moving at highway speeds.
Road debris is a continually persistent yet under-researched and unquantified highway hazard. The American Automobile Association (AAA) has attempted to quantify the road debris problem, although such efforts are complicated by how debris-related crashes are recorded in national crash databases. Nonetheless, AAA has estimated that road debris was a factor in nearly 53,000 crashes, 5,500 injuries, and 72 deaths annually. Many of the crashes examined by AAA involved debris from vehicle cargo.1
The debris problem produces three types of crashes:
- Direct strikes: a vehicle hits fallen cargo before the driver can react.
- Evasive maneuver crashes: a driver spots debris in time to swerve, but the swerve itself causes a collision or rollover.
- Secondary collisions: the initial debris event stops or slows traffic, and a following vehicle strikes the slowed or stopped vehicles.
Evasive maneuver crashes are often more deadly than direct strikes because they happen at full speed on the highway with little warning to surrounding traffic. AAA’s research found that roughly one in four injuries and nearly half of all deaths in road debris crashes occur when drivers swerve or take evasive action to avoid an object.1
Safety researchers and advocates call for coordinated responses, such as standardized crash documentation to improve debris tracking, faster debris removal protocols, and consistent enforcement of cargo securement laws. AAA’s research suggests that debris crashes can be substantially reduced by drivers and carriers properly securing their loads, the focus of this article.
Federal Requirements
Cargo securement on commercial trucks is governed by federal regulation. The Federal Motor Carrier Safety Administration (FMCSA), the federal agency responsible for regulating the American trucking industry, issues and enforces these standards. The primary regulatory framework is found at 49 C.F.R. Part 393, which sets forth the requirements for protecting against shifting and falling cargo.
Violations of FMCSA regulations carry civil and criminal penalties. In the context of a crash, a documented violation can be evidence of negligence or willful misconduct by the driver, carrier, or both.
Performance Standards
The foundational requirement is found at 49 C.F.R. § 393.100, and is applicable to trucks, truck tractors, semitrailers, full trailers, and pole trailers. Under this standard, every commercial motor vehicle transporting cargo on a public road must be loaded and equipped, and the cargo secured, in order to prevent the cargo from leaking, spilling, blowing, or falling from the motor vehicle. Cargo must also be contained, immobilized, or secured in a way that prevents it from shifting within or upon the vehicle to a degree that would adversely impact the vehicle’s stability or maneuverability.2
Performance standards also account for the forces of transportation. Tie-down devices must be capable of withstanding acceleration, deceleration, and turns.
Working Load Limits
A critical concept in cargo securement is the working load limit (WLL). A WLL is the maximum safe force expressed in pounds that the securing device is designed to handle under normal conditions. It is calculated by dividing the equipment’s breaking strength by a defined safety factor.3
Under 49 C.F.R. § 393.106, the aggregate working load limit of a tie-down system must be at least one-half the weight of the cargo being secured. The aggregate WLL is the sum of one-half of the working load limit of each tie-down that runs from an anchor point on the vehicle to an anchor point on the cargo. To illustrate: a carrier transporting a 20,000-pound load must deploy tie-down equipment with a combined working load limit of at least 10,000 pounds. If any single component in the system, from straps, to chains, to hooks, or anchor points, is rated below what the regulations require, the entire system is not in compliance.3
The minimum tie-down count is governed by 49 C.F.R. § 393.110 and is based primarily on cargo length:
Weight and commodity type can require additional tie-downs beyond this baseline. Additional federal regulations prescribe minimum requirements for performance criteria of cargo securement devices (49 C.F.R. § 393.102), standards for securement devices and systems (49 C.F.R. § 393.104), and the minimum number of tie-downs (49 C.F.R. § 393.110).
Commodity-Specific Standards
For certain high-risk cargo types, general tie-down requirements are supplemented, and in some cases superseded, by commodity-specific standards. These commodity-specific standards can be found at 49 C.F.R. §§ 393.116–393.136.
These rules address loads with unique securement challenges:
- Logs
- Dressed lumber
- Metal coils
- Concrete pipe
- Intermodal containers
- Automobiles
- Heavy equipment
These commodity-specific rules exist because standard tie-down requirements are not sufficient for loads that might shift or roll in transit, or cargo that concentrates weight in unusual ways. Metal coils, for instance, must be arranged in a manner to prevent the coil from tipping in any direction. One mechanism for transporting metal coils is via a "coil well," a specifically recessed area of the trailer. Metal coils may also require cradles, chocks, or blocking depending on how the coils are oriented and stacked.4
The Mechanics of Securement Breakdown
Understanding why cargo securement fails provides valuable insight into addressing the road debris problem. Loads do not fail randomly. In fact, there are consistent patterns in how tie-down systems degrade, shift, and ultimately give way, resulting in road debris.
Improper initial tensioning is one of the most common contributors to securement failures and ultimately road debris. Improper initial tensioning occurs when straps or chains are not tightened to the correct tension at the beginning of a trip. A tie-down that feels adequately snug at the loading dock may loosen after the first 50 miles of highway vibration. Road shock and vibration work against the tie-down system continually during transit, meaning that a marginally secured load at departure can become a dangerously loose load well before the final destination.
Edge protection failures represent another recurring problem. Edge protection failures occur when a tie-down passes over a sharp edge of cargo without an edge protector in place and the strap or chain cuts against the cargo during transit. Over miles and hours, that sustained friction acts like a saw on the tie-down. Straps that could originally withstand their rated load at departure may not be capable of doing so 300 miles later.
Blocking and bracing failures are the more common securement breakdown in enclosed trailers. When cargo is not properly braced against forward, rearward, and lateral movement, a hard brake or a sharp turn can shift an entire load.
Commercial Vehicle Safety Alliance's Out-of-Service Criteria
The Commercial Vehicle Safety Alliance (CVSA) establishes the out-of-service (OOS) criteria used by roadside inspectors across the United States, Canada, and Mexico. These criteria define specific conditions severe enough to prohibit a vehicle or driver from continuing to operate until corrections are made.5
While the FMCSA does conduct some inspections, the vast majority of roadside enforcement is carried out by state and local inspectors operating under CVSA certifications. As discussed above, FMCSA sets the underlying regulations. The CVSA sets the OOS criteria derived from the FMCSA regulations. When a vehicle condition meets OOS criteria, the inspector has the authority to immediately ground the driver or vehicle pending correction of the violation.6
FMCSA inspectors also evaluate whether tie-down equipment meets the WLL requirements for the cargo being carried.
One significant limitation of roadside cargo inspections is the enclosed trailer problem. Inspectors cannot open a sealed trailer without reasonable cause. A sealed trailer is a trailer where the shipper has loaded and secured the doors. The resulting problem is that a large share of commercial freight moves through inspection stations with its securement condition entirely unverified. Cargo violations are caught when inspectors can see the load. For sealed trailers, that opportunity rarely exists, unless inspectors obtain permission to break the seal.8
When inspectors do have access to the load, violations are found at notable rates. During the CVSA’s 2023 International Roadcheck, inspectors identified 2,975 cargo securement violations across 53,847 inspections. Cargo securement consistently ranks among the top five categories of vehicle OOS violations in annual CVSA data, historically accounting for roughly 10 to 16% of all vehicle OOS violations found during Roadcheck events.9
Drivers & Carriers Can Reduce Securement Failures
When it comes to cargo securement, companies and drivers can reduce violations, and ultimately dangerous and deadly crashes, by complying with the federal regulations. Federal regulations place affirmative obligations on drivers to inspect their cargo, not only upon loading, but throughout the trip.
In practice, these inspections are frequently skipped. Loading is often rushed to meet tight delivery schedules, and en-route checks add to drive time that many carriers are simply unwilling to spend. The pressure to quickly move freight is an industry-wide problem, not an individual driver failure.
Carriers bear responsibility beyond what an individual driver can control. Carriers are responsible for ensuring that tie-down equipment is maintained and replaced when worn or damaged, that drivers receive adequate training in cargo securement requirements, and that loading operations meet federal standards.
Liability for Cargo Securement Failures
Cargo securement failures do not always have a single responsible party. Depending on who loaded the cargo, who inspected it, who owns the equipment, and who was operating the vehicle, liability may extend to other parties.
The driver and the driver’s employer occupy the most direct legal position. Federal regulations require the driver to inspect the cargo and certify that it is properly secured before the vehicle moves. That obligation does not disappear simply because another party loaded the truck.
The shipper-loaded trailer presents a meaningful complication. When a shipper loads and seals a trailer, the driver may have no visibility into how the cargo was secured inside and no legal authority to break the shipper’s seal. In those instances, the entity that loaded and secured the cargo bears a greater share of responsibility for a securement failure. FMCSA regulations explicitly address this scenario: a driver is not required to inspect cargo that has been loaded by a shipper if the trailer is sealed and the driver has no reason to believe a violation exists.8
Carriers can face liability for systemic failures: inadequate training, defective tie-down equipment, and unrealistic scheduling that creates pressure to skip required inspections. In litigation, these systemic failures are often where the most significant evidence of corporate negligence is found.
Investigating a Cargo Securement Crash
The most important physical evidence in a cargo securement related crash is the condition of the tie-down equipment itself. Investigators look for the condition of the straps, chains, binders, and edge protectors used at the time of the failure. Also relevant to an investigation are wear patterns, ratings markings, and the weight of the cargo. For example, a strap rated for 3,000 pounds used on a 6,000-pound load is a blatant violation.9
Documentary evidence includes:
- The driver’s pre-trip inspection report
- The bill of lading
- Shipper loading records
- The carrier’s maintenance logs for tie-down equipment
These records establish what was known, what was required, and what was ignored.
Electronic data can place the truck at the right location and time and, in some cases, capture the moment of failure. Forward-facing dashcams increasingly document load conditions at departure. Electronic logging device (ELD) records correlate driving time and location with debris reports.
Sources
- [1] Tefft, B.C., Kasha, A., & Hungund, A. (2025). The Safety Impact of Road Debris: Updated Prevalences of Crashes, Injuries, and Deaths in the United States, 2018–2023 (Research Brief). AAA Foundation for Traffic Safety.
- [2] 49 C.F.R. § 393.100.
- [3] 49 C.F.R. § 393.106(d)(1)–(3).
- [4] 49 C.F.R. §§ 393.116–393.136.
- [5] Commercial Vehicle Safety Alliance, Out-of-Service Criteria.
- [6] 49 C.F.R. § 383.53.
- [7] Commercial Vehicle Safety Alliance, 2026 Out-of-Service Criteria Now in Effect (April 1, 2026).
- [8] Federal Motor Carrier Safety Administration, Question 3: How may a motor carrier determine safe loading when a shipper has loaded and sealed a trailer? (also codified at 49 C.F.R. § 392.9(b)(4)).
- [9] Commercial Vehicle Safety Alliance, 2023 International Roadcheck Results (July 31, 2023).