What increases the effect of centrifugal force on the vehicle when driving round bends?

The combination of higher speed and smaller radius of a bend indeed increases the effect of centrifugal force on a vehicle when navigating curves.

When driving at a higher speed, the force acting on the vehicle as it turns increases, leading to a greater tendency for the vehicle to slide outward due to inertia. Additionally, a smaller radius amplifies this effect because the vehicle must navigate a tighter turn, which further heightens the centrifugal force.

This understanding is essential for safe driving practices according to German traffic regulations, which emphasize the importance of adjusting speed when approaching curves. It helps prevent accidents and maintain vehicle control.

The third option, higher tyre pressure, does not directly contribute to increased centrifugal force; instead, proper tyre pressure is crucial for vehicle stability and handling, particularly at high speeds and during cornering. Therefore, focusing on speed and the radius of the bend is key in understanding how to safely manage vehicle dynamics in curves.