Nearly 90% of driving decisions are based upon what a motorist sees while driving. The driver must make the correct decision in a split second. Failure to make the correct decision can put the driver at risk of injury/death. Examples: checking mirrors and signaling. Some influences help us in making driving decisions like priorities (making decisions on what is important at the moment). Knowledge of the types of crashes that can be catastrophic to the driver is paramount in making the correct decisions behind the wheel.