There are two types of securement: indirect tiedowns and direct tiedowns. Pg. 6. It is called an indirect tiedown when. it is routed through, over, or around the cargo and the ends of the device are attached to opposite sides of the trailer.

What is a indirect tie down?

Indirect tiedown — A tiedown whose tension is intended to increase the pressure of an article or stack of articles on the deck of the vehicle.

What is a securement system?

Tiedown: A combination of securing devices which form an assembly that attaches cargo to, or restrains cargo on, a vehicle or trailer, and is attached to anchor point(s). ... A rail along the side of a vehicle that protects the side of the vehicle from impacts.