What is the overall impact of poor depth perception on driving?

Poor depth perception can significantly impair a driver's ability to judge distances accurately, particularly when estimating how far away other vehicles or obstacles are. This inability to assess space and distance can lead to critical errors in driving decisions, such as misjudging how much space is needed to safely change lanes, merge, or come to a stop at an intersection.

In scenarios where a driver needs to decide how fast to approach an object or how much time they have to react, inaccurate depth perception can result in undershooting or overshooting distances, leading to potential collisions or unsafe situations. This emphasizes the importance of depth perception in making safe driving judgments and maintaining road safety.

In contrast, the other choices suggest outcomes that do not align with the effects of poor depth perception in driving. For instance, increased speed may occur for various reasons but is not a direct result of impaired perception; better navigation skills and enhanced focus would typically involve improved cognitive functions and abilities, which are conversely impacted by poor depth perception.