Why Cargo Securement Is a Legal and Safety Requirement

Improperly secured cargo is one of the leading causes of serious accidents on US highways. Federal regulations under FMCSA Part 393 set specific requirements for how freight must be loaded, blocked, braced, and tied down. Violations found during DOT inspections result in out-of-service orders, fines, and CSA score points that follow your record for two years.

For owner operators, understanding these rules protects your safety rating, your cargo insurance claims, and your ability to work with quality brokers and shippers.

The Four Methods of Cargo Securement

FMCSA regulations recognize four primary methods of securing cargo, and most loads require a combination of them:

Tiedowns: Straps, chains, or wire rope attached to the vehicle and over the cargo to hold it in place
Blocking: Wood or metal braces placed against the cargo to prevent forward, rearward, or lateral movement
Bracing: Structural support placed between the cargo and the vehicle walls or floor
Friction mats: Non-slip material placed under cargo to increase friction and reduce movement

Minimum Tiedown Requirements

The number of tiedowns required depends on the length and weight of the cargo:

Cargo 5 feet or shorter and under 1,100 lbs: minimum 1 tiedown
Cargo 5 feet or shorter over 1,100 lbs: minimum 2 tiedowns
Cargo between 5 and 10 feet: minimum 2 tiedowns
Cargo longer than 10 feet: 2 tiedowns plus 1 additional tiedown for every 10 feet beyond the first 10

All tiedowns must have a working load limit that is at least half the weight of the cargo being secured.

Flatbed-Specific Securement Rules

Flatbed loads present unique challenges because the cargo is fully exposed. Key rules for flatbed operators include:

All cargo must be covered or secured so nothing can fall or blow off the trailer
Edge protectors must be used where straps contact sharp cargo edges to prevent strap damage
Coiled steel, lumber, pipes, and machinery each have commodity-specific securement rules
Chains are required for certain cargo types — straps alone are not always sufficient

Pre-Trip and En-Route Inspection Requirements

You are required to inspect your cargo and tiedowns within the first 50 miles of a trip and again after every 3 hours or 150 miles of driving, whichever comes first. Cargo can shift during transit even when properly secured at the start, especially on rough roads or through hard braking.

Keep a written log of your cargo inspection times and findings. This documentation protects you in case of an accident or inspection dispute.

Common Cargo Securement Violations to Avoid

Damaged or frayed straps and chains — inspect all equipment before each load
Insufficient number of tiedowns for the cargo weight and length
Tiedowns attached to non-structural anchor points on the trailer
Cargo extending beyond the rear of the trailer without proper lighting and markings
Failing to re-inspect cargo after the first 50 miles

Load Distribution and Weight Limits

Beyond securement, cargo must be distributed properly across the trailer axles. Improper weight distribution causes handling problems and can result in overweight axle violations even when the gross vehicle weight is legal. Use a certified scale after loading heavy or unevenly distributed freight to confirm axle weights before hitting the road.

Work With a Dispatcher Who Understands Your Load Requirements

At Nexloads, our dispatchers understand the requirements for different cargo types and factor securement needs into load planning. We do not book you on loads your equipment cannot handle safely. Check our dispatch plans to see how we support compliant, professional owner operators.