What is a significant effect of amphetamine on driving ability?

Amphetamines can significantly alter a person's driving ability, and the correct choice emphasizes the serious risks associated with their use. When someone is under the influence of amphetamines, they may experience increased alertness and a perceived enhancement in focus. However, this can lead to overconfidence and risky driving behavior. Studies indicate that the impairment caused by amphetamines can be comparable to, or even worse than, having a blood alcohol concentration (BAC) above .05. This level of BAC is known to impair judgment and motor skills, which aligns with the risks presented by amphetamine use.

While it’s true that some individuals may initially feel more focused, the reality is that these drugs can lead to impulsive decisions and longer reaction times as fatigue sets in or as the effects wear off. Therefore, stating that the risk is similar to that of a driver with a BAC above .05 highlights the dangerous nature of driving while under the influence of amphetamines, especially considering the legal implications and public safety concerns.