What is the most common cause of accidents?

• A. Driving under the influence of drugs and/or alcohol
• B. Speeding
• C. Lack of experience
• D. Failing to obey traffic signs

Answer: (A)

Impairment from drugs or alcohol weakens several driving abilities at once, making it harder to judge distances, react quickly, stay within lanes, and notice hazards. When a driver’s judgment, perception, and motor skills are degraded, the risk of crashing rises across many driving situations, so this factor shows up as a leading contributor to accidents, including many fatal crashes. Other factors like speeding, lack of experience, or ignoring traffic signs can also cause crashes, but they don’t universally account for accidents in the way that impairment does, and they often interact with or are amplified by impairment. Understanding how intoxication or drug use undermines driving helps explain why it’s identified as the most common cause.