What impairment effects do marijuana and amphetamine use have on driving?

Using marijuana and amphetamines can significantly impair a driver's ability to operate a vehicle safely. One of the most critical impacts is the decrease in concentration and judgment. When individuals consume these substances, their cognitive functions are affected, leading to difficulties in focusing on the road, making sound decisions, and reacting promptly to potential hazards.

Marijuana can impair short-term memory and attention span, making it challenging for drivers to maintain awareness of their surroundings and the driving situation. Similarly, while amphetamines may initially seem to increase alertness, they can lead to an abrupt crash in attention and judgment, especially after the stimulant effects wear off. Both substances compromise a person's ability to assess risks properly and follow traffic laws, which can result in dangerous driving behavior.

Understanding this impairment is critical, as it emphasizes the importance of remaining sober and alert while driving to ensure safety on the road.