Alberta Commercial Driver Practice Exam

Most fatigue-related collisions occur during the time frame of 2 am to 6 am due to several factors related to the natural circadian rhythms of individuals. This period typically coincides with a significant decrease in alertness and an increase in sleepiness for many people, particularly in those who follow conventional day-night schedules. During these early morning hours, individuals are often fighting against their body's natural tendency to sleep, which can severely impair judgment, reaction times, and overall driving performance. The darkness of the night, coupled with reduced traffic volume, can create a situation where drivers feel more at ease, potentially leading them to underestimate their levels of fatigue, further elevating the risks of accidents. Recognizing this peak time for fatigue-related incidents emphasizes the importance of adequate rest before driving and raises awareness among drivers to prioritize sleep, especially if they plan to be on the road during these hours.