What is a common hazard of a decreasing radius curve?

A decreasing radius curve presents a unique set of challenges for drivers, primarily due to its unpredictable nature. As the curve continues to tighten, drivers may find it increasingly difficult to maintain control, especially if they enter the curve at a higher speed than safe. This unpredictability can lead to a loss of traction or control, increasing the risk of accidents.

While decreasing radius curves can sometimes encourage speeding, this behavior can vary greatly among drivers. They typically do not come with a guarantee of being well-marked, and visibility can be affected by factors like terrain, foliage, or weather conditions. Therefore, the characteristic of unpredictability is particularly significant since it directly impacts the driver's ability to navigate safely and effectively through the curve.