What effect does marijuana use have on a driver?

• A. Improves Concentrations
• B. Adversely Affects Concentrations, Judgement, and Perception
• C. Increases Reaction Time
• D. No Impact on Driving

Answer: (B)

Marijuana use impairs driving because it slows cognitive processing and dulls attention, judgment, and perception. When behind the wheel, this shows as reduced ability to concentrate on the road, poorer judgment about speeds and following distances, and distorted perception of time, space, and hazards. These broad impairments make it harder to notice signals, react appropriately to other vehicles or pedestrians, and respond quickly in emergencies. While reaction time can be affected, the most accurate description for safe driving is that marijuana disrupts multiple driving-critical abilities simultaneously. Statements claiming an improvement or no impact aren’t true, and describing only one narrow effect doesn’t capture the full danger.