Why is it important to adjust speed when entering a curve?

Adjusting speed when entering a curve is crucial for maintaining proper traction. As a vehicle navigates a curve, the forces acting on it change, affecting its grip on the road. Reducing speed allows the tires to maintain contact with the road surface, reducing the risk of skidding or losing control. Proper traction is essential for steering the vehicle effectively, especially in a curve, where the centrifugal force can push the vehicle outward.

While visibility is important, proper traction directly impacts safety and control in a curve. Fuel efficiency and signaling other drivers do not have the same direct correlation to the mechanics of navigating a curve. Therefore, maintaining appropriate speed is fundamentally linked to the vehicle's ability to safely maneuver through a curve.