Defensive Driver Academy Practice Test

The main idea is that risk of fatal injury in a crash depends on both how fast you’re going and how well you’re paying attention. Going faster dramatically increases the energy of a crash and the distance you need to stop, so injuries—and the chance of death—rise with speed. At the same time, being attentive helps you spot hazards early and react, brake, or steer to avoid a crash or lessen its severity. Because both factors influence outcomes, the best choice is that all of the above are true. Focusing only on speed ignores the importance of attention, and focusing only on attention ignores how speed amplifies crash energy. None of the factors being irrelevant is also incorrect, since both speed and attention matter.