Driver's Handbook on Cargo Securement - Chapter 2: General Cargo Securement Requirements

General Cargo Securement Requirements

Aggregate Working Load Limit

What is the Aggregate Working Load Limit?

The sum of the working load limits of each device used to secure an article on a vehicle is called the aggregate working load limit.

How do you calculate Aggregate Working Load Limit for tiedowns?

To calculate Aggregate Working Load limit, add together:

  • 50% of the WLL of each end section of a tiedown that is attached to an anchor point.
  • 50% of the WLL of each end section that is attached to the cargo

Example:
50% of A
+ 50% of B
+ 50% of C
+ 50% of D
+ 50% of E
+ 50% of F
+ 50% of G
+ 50% of H
= Aggregate Working Load Limit

Example:
50% of A
+ 50% of B
+ 50% of C
+ 50% of D
= Aggregate Working Load Limit

How much should the Aggregate Working Load Limit be?

The aggregate working load limit of any securement system must be at least 50% of the weight of the cargo being secured.

Inspection Requirements

The driver is responsible for the following cargo securement inspection activities:

  • Inspect Cargo and Securing devices:

    • Pre-Trip: Yes
    • Within first 50 mi: Yes
    • When duty status of driver changes: Yes
    • At 3 hour intervals or every 150 mi, whichever is first: Yes

  • Inform Carrier if Packaging is Not Adequate:

    • Pre-Trip: Yes
    • Within first 50 mi: No
    • When duty status of driver changes: No
    • At 3 hour intervals or every 150 mi, whichever is first: No

  • Adjust Cargo and/or Securing devices:

    • Pre-Trip: As necessary
    • Within first 50 mi: As necessary
    • When duty status of driver changes: As necessary
    • At 3 hour intervals or every 150 mi, whichever is first: As necessary

  • Add Additional Securing devices:

    • Pre-Trip: As necessary
    • Within first 50 mi: As necessary
    • When duty status of driver changes: As necessary
    • At 3 hour intervals or every 150 mi, whichever is first: As necessary

Note: The inspection rules do not apply to the driver of a sealed commercial motor vehicle who has been ordered not to open it to inspect its cargo or to the driver of a commercial motor vehicle that has been loaded in a manner that makes inspection of its cargo impracticable.

Driver inspection checklist:

Pre-Trip
  • Make sure that cargo is properly distributed and adequately secured (in other words, according to the Standard).
  • Make sure that all securement equipment and vehicle structures are in good working order and used consistent with their capability.
  • Stow vehicle equipment.
  • Make sure that nothing obscures front and side views or interferes with the ability to drive the vehicle or respond in an emergency.
  • Inform carrier if packaging is not adequate. For example:
    • Banding is loose or not symmetrical on package.
    • Banding attachment device(s) are inefficient.
    • Wrapping is broken or ineffective.
    • Pallets are broken.
Periodic inspections during transit:
  • Inspect cargo and securing devices.
  • Adjust cargo or load securement devices as necessary to ensure that cargo cannot shift on or within, or fall from, the commercial motor vehicle.
  • As necessary, add more securing devices.
Law enforcement inspections

Law enforcement is responsible for roadside inspections in accordance with federal, state, or provincial laws.

Related Cargo Securement Terms That Every Driver Should Know:

  • Cab shield:

    A vertical barrier placed directly behind the cab of a tractor to protect the cab in the event cargo should shift forward.

  • Dunnage bag:

    An inflatable bag intended to fill otherwise empty space between articles of cargo, or between articles of cargo and the wall of the vehicle.

  • Container Chassis Vehicle:

    A vehicle especially built and fitted with locking devices for the transport of intermodal containers.

CDL:

Commercial Driver's License (CDL)

A CDL is required to drive any of the following vehicles:

  • Any combination of vehicles with a gross combined weight rating (GCWR) of 26,001 or more pounds, providing the gross vehicle weight rating (GVWR) of the vehicle being towed is in excess of 10,000 pounds.
  • Any single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds.
  • Any vehicle, regardless of size, designed to transport 16 or more persons, including the driver.
  • Any vehicle required by federal regulations to be placarded while transporting hazardous materials.

Commercial Motor Vehicle:

A commercial motor vehicle is any vehicle used in commerce to transport passengers or property with either:

  • A gross vehicle weight rating of 26,001 pounds or more
  • A gross combination weight rating of 26,001 pounds or more which includes a towed unit with a gross vehicle weight rating of more than 10,000 pounds
  • Intermodal:

    Transporting freight using two or more transportation modes. An example would be freight that is moved by truck from the shipper's dock to the rail yard, then placed on a train to the next rail yard, and finally returned to a truck for delivery to the receiving customer.

    In trucking when you hear someone refer to an intermodal job they're normally talking about hauling shipping containers to and from the shipyards and railyards.

    OWI:

    Operating While Intoxicated

    OOS:

    When a violation by either a driver or company is confirmed, an out-of-service order removes either the driver or the vehicle from the roadway until the violation is corrected.

Review Questions - Click On The Picture To Begin...

The Aggregate Working Load Limit should, at minimum, be:
  • 50% of the weight of the cargo.
  • Determined by the shipper.
  • 100% of the weight of the cargo.
  • 80% of the weight of the cargo.

Quote From The CDL Manual:

How much should the Aggregate Working Load Limit be?

The aggregate working load limit of any securement system must be at least 50% of the weight of the cargo being secured.

Next
Who is responsible for inspecting securing devices and cargo within the first 50 miles?
  • Your Moms.
  • The shipper.
  • The D.O.T.
  • The driver.

Quote From The CDL Manual:

Inspect Cargo and Securing devices:

  • Pre-Trip: Yes
  • Within first 50 mi: Yes
  • When duty status of driver changes: Yes
  • At 3 hour intervals or every 150 mi, whichever is first: Yes

Prev
Next
As part of their pre-trip cargo securement inspection, drivers should:
  • All of these apply.
  • Make sure cargo is properly secured.
  • Check for anything that will obscure their vision.
  • Inform carrier of any inadequate packaging.

Quote From The CDL Manual:

Driver inspection checklist:

Pre-Trip
  • Make sure that cargo is properly distributed and adequately secured (in other words, according to the Standard).
  • Make sure that all securement equipment and vehicle structures are in good working order and used consistent with their capability.
  • Stow vehicle equipment.
  • Make sure that nothing obscures front and side views or interferes with the ability to drive the vehicle or respond in an emergency.
  • Inform carrier if packaging is not adequate. For example:
    • Banding is loose or not symmetrical on package.
    • Banding attachment device(s) are inefficient.
    • Wrapping is broken or ineffective.
    • Pallets are broken.
Prev
Next
A dunnage bag is:
  • A transverse load bearing structural component, particularly a part of a log bunk.
  • A structure, device, or another substantial article placed against or around an article to prevent horizontal movement of the article.
  • A waterproof sheet used to cover cargo.
  • An inflatable bag intended to fill otherwise empty space between articles of cargo, or between articles of cargo and the wall of the vehicle.

Quote From The CDL Manual:

Dunnage bag:

An inflatable bag intended to fill otherwise empty space between articles of cargo, or between articles of cargo and the wall of the vehicle.

Prev
Next
A container chassis vehicle is defined as:
  • A structure, device, or another substantial article placed against an article to prevent it from tipping that may also prevent it from shifting.
  • A reusable, transportable enclosure that is especially designed with integral locking devices that secure it to a container chassis trailer to facilitate the efficient and bulk shipping and transfer of goods by, or between various modes of transport, such as highway, rail, sea, and air.
  • A vehicle especially built and fitted with locking devices for the transport of intermodal containers.
  • A specialized container, primarily used to contain and transport materials in the waste, recycling, construction/demolition, and scrap industries, which are used in conjunction with specialized vehicles, in which the container isloaded and unloaded onto a tilt frame body by an articulating hook-arm.

Quote From The CDL Manual:

Container Chassis Vehicle:

A vehicle especially built and fitted with locking devices for the transport of intermodal containers.

Prev
Next
What is the Aggregate WLL of the securement system for a load secured with 7 tiedowns: 3 rated at WLL of 4,000 lbs, 2 at 6,500, and 1 at 8,000?
  • 8,250 lbs
  • 16,500 lbs
  • 33,000 lbs
  • 10,000 lbs

Quote From The CDL Manual:

How do you calculate Aggregate Working Load Limit for tiedowns?

To calculate Aggregate Working Load limit, add together:

  • 50% of the WLL of each end section of a tiedown that is attached to an anchor point.
  • 50% of the WLL of each end section that is attached to the cargo
Prev
Next
What is a cab shield?
  • A vertical barrier across the front of the deck of a vehicle to prevent forward movement of cargo.
  • A structure, device, or another substantial article placed against or around an article to prevent horizontal movement of the article.
  • A vertical barrier placed directly behind the cab of a tractor to protect the cab in the event cargo should shift forward.
  • The depression formed between two cylindrical articles when they are laid with their eyes horizontal and parallel against each other.

Quote From The CDL Manual:

The load carrying area of a truck, trailer, or intermodal container.
Prev
Finish
Please select an option
[1,4,1,4,3,2,3]
7

Join Us!

We have an awesome set of tools that will help you understand the trucking industry and prepare for a great start to your trucking career. Not only that, but everything we offer here at TruckingTruth is 100% free - no strings attached! Sign up now and get instant access to our member's section:
High Road Training Program Logo
  • The High Road Training Program
  • The High Road Article Series
  • The Friendliest Trucker's Forum Ever!
  • Email Updates When New Articles Are Posted

Apply For Paid CDL Training Through TruckingTruth

Did you know you can fill out one quick form here on TruckingTruth and apply to several companies at once for paid CDL training? Seriously! The application only takes one minute. You will speak with recruiters today. There is no obligation whatsoever. Learn more and apply here:

Apply For Paid CDL Training

About Us

TruckingTruth was founded by Brett Aquila (that's me!), a 15 year truck driving veteran, in January 2007. After 15 years on the road I wanted to help people understand the trucking industry and everything that came with the career and lifestyle of an over the road trucker. We'll help you make the right choices and prepare for a great start to your trucking career.

Read More

Becoming A Truck Driver

Becoming A Truck Driver is a dream we've all pondered at some point in our lives. We've all wondered if the adventure and challenges of life on the open road would suit us better than the ordinary day to day lives we've always known. At TruckingTruth we'll help you decide if trucking is right for you and help you get your career off to a great start.

Learn More