👉 Southbound, also known as a "downstream" or "eastbound," refers to a direction of travel where one vehicle is moving in the opposite direction from another. This term typically denotes a journey that begins and ends at the same point, with the first vehicle traveling in the clockwise direction (i.e., southbound) while the second vehicle travels in the counterclockwise direction. In terms of traffic flow, this term can refer to a situation where one vehicle is moving through traffic while