True or False: Driving while tired has no effect on the risk of a serious crash.

Driving while tired is a significant factor that can increase the risk of serious crashes. Fatigue can impair a driver's ability to react quickly and make sound decisions, much like alcohol does. When a driver is drowsy, their attention, perception, and reaction time are severely compromised, leading to an increased likelihood of accidents. Research indicates that sleep deprivation can cause cognitive impairment and slows down the brain's function, which is vital for safe driving. Thus, acknowledging that tiredness does have a critical impact on the risk of a serious crash affirms that the statement is false. Proper rest and alertness are essential for maintaining safe driving practices, highlighting the importance of being well-rested before operating a vehicle.