Visual acuity is reduced more than ______________ at nighttime.

Visual acuity is a critical factor in safe driving, and it tends to diminish significantly in low-light conditions, such as nighttime. Research indicates that visual acuity can be reduced by approximately twenty-five percent at night due to several factors, including decreased available light, glare from oncoming headlights, and the inability of the human eye to adjust as quickly to changes in light levels.

This reduction can impair a driver's ability to see objects clearly, judge distances accurately, and react promptly to potential hazards on the road. Understanding how much perception can be affected at night is essential for drivers to recognize the importance of being cautious and possibly adjusting their driving behaviors when visibility is lower. Hence, the twenty-five percent figure is a key benchmark for drivers to keep in mind regarding how visibility changes with the time of day.