Which statement correctly describes the effects of cannabis on driving?

Which statement correctly describes the effects of cannabis on driving?

• A. Impairs attention, psychomotor performance, and reaction time; impairment can persist after intoxication
• B. Aids driving performance
• C. Has no effect on driving safety
• D. Only affects short-term memory

Answer: (C)

Cannabis impairs driving by reducing attention and concentration, slowing psychomotor performance, and delaying reaction time. These effects can be dose-dependent and may persist after the acute intoxication wears off, so impairment can linger and affect driving for hours. This leads to poorer lane maintenance, slower braking, and a diminished ability to respond to hazards, increasing crash risk. It does not improve driving, does not have no effect, and it’s not limited to short-term memory—the impact spans multiple aspects of driving skills.

Cannabis impairs driving by reducing attention and concentration, slowing psychomotor performance, and delaying reaction time. These effects can be dose-dependent and may persist after the acute intoxication wears off, so impairment can linger and affect driving for hours. This leads to poorer lane maintenance, slower braking, and a diminished ability to respond to hazards, increasing crash risk. It does not improve driving, does not have no effect, and it’s not limited to short-term memory—the impact spans multiple aspects of driving skills.