(intense music) Cargo-related highway accidents can have devastating results, not only for people and property, but for businesses' and drivers' careers as well. Preventing these accidents begins with organizing and standardizing the securement process. So the North American Cargo Securement Standard requires motor carriers and their employees to secure the cargo on the vehicles that they operate using securement systems. The standard requires any system that is used to restrain a load be appropriate for the cargo's size, shape, strength, and characteristics. More specifically, it must be able to withstand physical forces equal to 80% of the cargo weight in a forward direction, such as occurs when a truck that is driving straight ahead puts on the brakes, 50% of the cargo weight in a rearward direction, which can occur when a truck is accelerating, shifting gears while climbing a hill, or braking in reverse, 50% of the cargo weight in a sideways direction, such as occurs when a truck is turning, changing lanes, or braking while turning, and 20% of the cargo weight in an upwards direction, which can occur when a truck is traveling over bumps or cresting a hill. To achieve all of this, a securement system can make use of vehicle structures, blocking and bracing equipment, and securing devices. Vehicle structures include floors, walls, decks, headboards, bulkheads, anchor points, stakes, and posts. Blocking and bracing can include chocks and cradles, as well as any material used for dunnage, such as tarps, plastic wrapping, liner bags, and matting. Securing devices are devices that have been specially manufactured to attach or secure cargo to a vehicle or trailer. These can include chains, synthetic webbing, Manila rope, clamps and latches, grab hooks, binders, shackles, D-rings, friction mats, and more. Tiedowns are another important concept in cargo securement. They are assembled by connecting several securing devices together. For example, a tiedown could include a couple of grab hooks, a length of chain, a shackle, and a ratchet tightening device. One end of a tiedown attaches to an anchor point on the vehicle. The other end can be attached to the cargo directly, or passed through, around, or over the cargo, then fastened to a second anchor point. In situations where a tiedown rests against the cargo, edge protection should be used to prevent them from damaging one another. The Cargo Securement Standard requires that all of these vehicle structures, blocking, bracing, and securing devices, including tiedowns, have adequate strength to restrain the cargo that a vehicle is transporting. The standard also specifies that wood which is used for blocking, bracing, or dunnage should be properly seasoned hardwood free of knots, splits, or decay, with grain that runs lengthwise. If the elements of a securement system become worn or damaged, their strength and function could be compromised, so all securement equipment must be inspected before use and replaced if it shows signs of any problems.