The "convoy effect" refers to a phenomenon where groups of individuals or vehicles travel together for safety and efficiency. This effect is commonly observed in situations like military operations or during long-distance travel, where participants benefit from mutual support and protection. In the context of transportation, the convoy effect can lead to reduced fuel consumption and improved travel times, as vehicles can take advantage of drafting behind one another. This effect is particularly relevant for trucks, buses, and military convoys, where coordination enhances overall performance and safety.