What is the effect of marijuana use on a driver's performance?

Marijuana use adversely affects concentration, judgment, and perceptual skills, which are critical for safe driving. When someone consumes marijuana, its psychoactive compound, THC, can impair cognitive functions and motor skills. This includes slowed reaction times, diminished attention span, and impaired decision-making capabilities. These effects can lead to increased difficulty in performing tasks such as staying in lane, responding quickly to sudden changes in traffic, or making sound judgments regarding speed and distance.

Research has shown that drivers under the influence of marijuana may find it harder to assess risk and navigate complex driving situations, which can significantly raise the likelihood of accidents. Understanding these impacts is crucial for promoting road safety and informed decision-making regarding driving while under the influence.