In driving terms, what does a decreasing radius refer to?

A decreasing radius refers to a turn that becomes tighter as the vehicle progresses through it. In driving situations, this often occurs in curves where the road narrows as you approach the apex, requiring the driver to adjust their steering input to navigate the turn safely and effectively.

When approaching such a curve, drivers must be aware of the need to manage speed and steering angle. It is essential to execute the turn smoothly while maintaining control of the vehicle, as the decreasing radius can catch drivers off guard if they are not anticipating the change in curvature.

In contrast, a wider turn suggests a consistent or increasing radius, while an unchanging turn indicates a steady curve that maintains the same radius throughout. A sudden stop does not relate to the concept of a radius at all, as it pertains to the vehicle's deceleration rather than its turning characteristics. Understanding the impact of a decreasing radius is vital for safe maneuvering in driving scenarios, particularly in high-speed situations or challenging road conditions.