No More Fines!!!! 🚨 Yellow Box Junction Yellow box junction road markings are an important traffic control measure used at intersections to maintain the flow of traffic and prevent congestion. They are characterized by a yellow box with crisscrossing diagonal yellow lines. The purpose of a yellow box junction is to ensure that vehicles do not block the intersection. The area within the box must be kept clear at all times, and drivers should only enter the box if they have a clear exit on the ot