When is it particularly critical to measure and maintain following distance?

Maintaining a proper following distance is crucial when towing a trailer due to the increased size, weight, and reduced maneuverability that a trailer introduces to your vehicle operation. Towing a trailer significantly affects how your vehicle accelerates, brakes, and turns. Therefore, it is especially important to maintain a greater following distance to account for the longer stopping distances required and to allow for any potential sway that the trailer may experience.

In contrast, while sunny days can create ideal driving conditions, they do not inherently change the dynamics of following distance. Intersections are also critical areas for careful driving, but the need for extended following distance does not compare to the complexities involved in towing. Parking in urban areas involves different considerations, such as awareness of pedestrians and other parked vehicles, rather than the specific need for increased following distance due to towing.