Good question!  You don’t need to know them if you want to be like most new drivers who are involved in a crash in their first six months of driving. 

You only need to learn these skills if you want to learn how to become a collision-free driver. 

You have enough sense to realize that a vehicle can be a dangerous weapon.  Chances are pretty good that you either know someone personally or know of someone who has been seriously injured in a collision.  This is one time when you don’t want to be just like everyone else.