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A top-down diagram of a motorway interchange with a main road, entry and exit ramps, and an auxiliary lane, color-coded for new design elements.

A top-down diagram of a motorway interchange with a main road, entry and exit ramps, and an auxiliary lane, color-coded for new design elements.

A 2D top-down view of a motorway interchange design. The central main road runs horizontally with two lanes in each direction, separated by a dashed white line. On the left side, a curved entry ramp merges onto the main road from the north, and a long exit ramp branches off from the main road towards the south. Between two interchanges, a clearly marked auxiliary lane runs parallel to the main road. Use arrows to indicate traffic flow. The ramps and auxiliary lane are highlighted in a different color to show they are new design elements. Include labels: "Main Road", "Entry Ramp", "Exit Ramp", and "Auxiliary Lane". Add a simple legend box in one corner. Keep the design clean and professional, suitable for civil engineering presentation. Mehr sehen