What is a common rule to ensure a safe distance from a motorcycle?

The correct answer is the 4-second rule, which is commonly recommended for maintaining a safe following distance from a motorcycle. This rule is particularly important due to the smaller size and different braking capabilities of motorcycles compared to cars. Motorcycles can stop more quickly, and maintaining a 4-second gap helps provide an adequate buffer for the driver to react in unexpected situations, reducing the risk of rear-end collisions.

The 4-second rule allows drivers to better account for the motorcycle's maneuverability and the potential for sudden stops. This distance is measured by choosing a fixed point on the road and ensuring that the vehicle does not reach that point until at least 4 seconds have passed after the motorcycle has passed it. This method is effective not only in maintaining a safe distance but also in fostering a better overall safety mindset for both the motorcycle rider and other road users.

In contrast, the other options suggest shorter intervals, which may not provide sufficient time and distance to react to sudden changes in a motorcycle's speed or position on the road.