What is a common risk factor for driving that involves mental state?

Being overly tired is a well-documented risk factor for driving that directly affects a driver's mental state. When a person is fatigued, their cognitive functions such as reaction time, attention, judgment, and decision-making abilities can become significantly impaired. Fatigue can lead to slower responses to stimuli on the road, decreased awareness of the surrounding environment, and an increased likelihood of making errors. This impairment can resemble the effects of alcohol consumption in terms of its impact on driving capabilities. Understanding this risk emphasizes the importance of being well-rested before getting behind the wheel to ensure safety for oneself and others on the road.