When is it not safe to drive?

Driving is inherently risky when a driver is not fully in control of their faculties, so the safest choice is to avoid driving when one is drowsy, under the influence of substances, or distracted.

Drowsiness can significantly impair reaction time, judgment, and attention, much like driving under the influence of alcohol or drugs. Both conditions reduce cognitive functions necessary for safe driving, leading to increased chances of accidents. Additionally, distractions—ranging from mobile devices to loud music—take attention away from the road and can prevent a driver from responding promptly to sudden changes or hazards.

While adverse conditions such as rain, rush hour traffic, and icy roads can present challenges for driving, they do not inherently render it unsafe in every circumstance. Proper precautions, adaptations to driving behavior, and adherence to safe practices can allow for safe driving even in these conditions—unlike the mental state issues highlighted in the correct answer.