triangle has been expanded to eight lanes. Between Cologne-Ost and Heumarer Dreieck, the A 4 (Aachen-Olpe) runs on a common route with the A 3. After Cologne...

territory, then the A 45 merges with the A 3 at the interchange Seligenstädter Dreieck in the state of Hesse, just to the west of the Bavarian city of...