Why is it important to keep a safe distance when following large vehicles?

Maintaining a safe distance when following large vehicles is crucial primarily to ensure visibility and sufficient reaction time in the event that these vehicles make sudden stops. Large vehicles, such as trucks and buses, have longer stopping distances due to their size and weight. If a driver is too close behind one of these vehicles, they may not be able to react in time to avoid a collision if the vehicle in front stops abruptly. A safe following distance allows for adequate space to perceive potential hazards and respond appropriately, contributing to the overall safety of everyone on the road.

While it is also important to consider blind spots, easing the difficulty of overtaking, and legal requirements, the primary reason for keeping a safe distance directly relates to the need for visibility and reaction time in dynamic driving situations.