What percentage of traffic crashes involve driver error?

• A. 50%
• B. 20%
• C. 70%
• D. 90%

Answer: (D)

Human factors drive most crashes. Research shows that driver behavior is involved in the vast majority of incidents, with driver error contributing to about nine out of ten crashes. That includes distractions, fatigue, impairment, speeding, following too closely, and poor decision making. Because errors by the driver occur so often, the 90% figure best reflects the reality of crash causation. The other numbers underestimate how often people contribute to crashes, even though weather or vehicle problems can also play a role. This is why safe driving habits—staying focused, avoiding distractions, driving sober, and maintaining a safe speed and following distance—have such a big impact on reducing crashes.