The use of soft armor and hard armor on a military Moped or other light vehicle is pretty much common sense, because of the inherent danger presented by very small and fast targets. In other words, if you’re traveling in a light vehicle with an attached machine gun, you want to be wearing hard armor so that if you do encounter a small target from a distance, you can shoot it and get away from it as fast as possible without blowing your cover or taking too much damage. While it is true that most soft armor types are not capable of defeating very fast or very heavy rounds fired at very close quarters, they can still help protect the operator of the vehicle from harm in close quarter fighting. There are many different types of soft armor that are used for this purpose, including quilted or other textured armor, quilted fiberglass, and what is known as soft armor insert, which is simply a steel plate used to attach various layers of armor to a main armored piece of armor. All of these serve different purposes and can be used for both offensive and defensive applications.
Hard Armor Quilted or Textured Hard Armors- The hard armor types are basically quilted plates of extremely hard, thick material. They are typically used for very long range shots and anti-airsoft guns are specifically made for using these types of ammo. Level I through IV are hard armor designed to prevent pistol shots, level III is level IV, and the last spike level is level IIIA which is capable of stopping high velocity rifle round fire. Also check: https://acelinkarmor.com/body-armor/bulletproof-vests/
Soft Armor Plate Carrier Systems- The soft armor plate carrier systems are very similar to the hard armor plate carriers that we have been discussing. There are a couple major differences though. Unlike the hard plates that you see on your guns, soft armor is designed to absorb impacts from things such as hand grenades, other rounds fired in the gun’s chamber, or even other projectiles fired at the user from the user’s perspective. Unlike the hard plates, soft armor is only designed to absorb impacts. This system is typically used on handguns and other fast firing weapons that won’t retain much energy after the shot and will not slow down.