CDL Practice Tests For Flatbed Cargo Securement Page 9

Note: More tiedowns may be required to satisfy the general cargo securement requirements. The Standard states: "The sum of the working load limits from all tiedowns must be at least 50% of the weight of the cargo."

What Does This Section Cover?

The requirements in this section apply to the transportation of heavy vehicles, equipment, and machinery that:

• Operate on wheels or tracks, such as front end loaders, bulldozers, tractors, and power shovels.
• Individually weigh more than 4500 kg (10,000 lb.).

Special Circumstances: Securing Heavy Vehicles, Equipment, or Machinery with Crawler Tracks or Wheels

Tiedown requirements

• Restrain cargo using a minimum of four tiedowns, each having a WLL of at least 2,268 kg (5,000 lb.).
• Prevents cargo movement in the side-to-side, forward, rearward, and vertical directions.
• Attach tiedowns:
  • Either at the front and rear of the vehicle.
  • Or at the mounting points on the vehicle designed for that purpose.

• Restrain cargo using a minimum of four tiedowns, each having a WLL of at least 2,268 kg (5,000 lb.).

Securement Requirements

Transport flattened or crushed vehicles so that:

• Cargo does not shift while in transit AND
• Loose parts from the flattened vehicles do not dislodge and fall from the transport vehicle

Do not use synthetic webbing to secure vehicles.

Option 3:

Has containment walls on two sides that:

• Extend to the full height of the load.
• Block against cargo movement in the forward and rearward.

Secures each stack of vehicles with a minimum of three tiedowns, each having a minimum WLL of 2,268 kg (5,000 lb.).

Option 2:

Has containment walls on three sides that:

• Extend to the full height of the load
• Block against cargo movement in the forward, rearward, and one sideways direction.

Secures each stack of vehicles with a minimum of two tiedowns, each having a minimum WLL of 2,268 kg (5,000 lb.).

Option 3:

Has containment walls on two sides that:

• Extend to the full height of the load.
• Block against cargo movement in the forward and rearward.

Secures each stack of vehicles with a minimum of three tiedowns, each having a minimum WLL of 2,268 kg (5,000 lb.).

Option 4:

Has a minimum of four tiedowns per vehicle stack with each tiedown having a minimum WLL of 2,268 kg (5,000 lb.).

Containing Loose Parts

Use a containment system that:

• Prevents loose parts from falling from all four sides of the vehicle AND
• Extends to the full height of the cargo.

The containment system can consist of one or a combination of the following methods.

• Structural walls.
• Sides or sideboards.
• Suitable covering material.

The use of synthetic material for containment of loose parts is permitted.

Secure to the rear of the vehicle with at least one of the following three mechanisms:

• Rear Mechanism 1:

  One tiedown attached to both the vehicle chassis and the container chassis.

• Rear Mechanism 2:

  Two tiedowns installed lengthwise, each securing one side of the container to one of the vehicle's side rails.

• Rear Mechanism 3:

  Two hooks, or an equivalent mechanism, securing both sides of the container to the vehicle chassis at least as effectively as the tiedowns in the two previous items.