intersection into the northern Ruhr area. Further south, the A 2 (Oberhausen-Hannover-Berlin) crosses at Hamm on Kamener Kreuz; The A 1 will now six lanes to Cologne and crosses a few kilometers further at Unna the A 44 (Dortmund-Kassel). After connecting Dortmund's suburb of Schwerte, the A 45 will cross to Frankfurt am Main on the Westhofener Kreuz and the A 1 will pass Hagen. Shortly before Wuppertal, the A 43 and the A 46 are connected to Düsseldorf on the Wuppertal-Nord cross. In now southwestern direction it goes through the hilly Bergische Land past the cities of Wuppertal and Remscheid, where the carriageways in the Blombachtal partly run separately, before starting from the cross Leverkusen with the cross with the A 3 (Emmerich-Frankfurt am Main-Passau) A 1 forms the northern and western part of the motorway ring around Cologne. After crossing Leverkusen-West (A 59 to Düsseldorf), the motorway crosses the Rhine on a large cable-stayed bridge, passes the Ford plant in Cologne-Niehl and crosses the A 57 (Goch-Krefeld-Cologne) at the junction Köln-Nord. After the change of direction to the south of the Cologne district Lövenich is traversed in a 1.5 km long noise protection housing and leave at the cross Cologne West with the A 4 (Aachen-Cologne-Olpe) the Cologne Ring again. Again four-lane now begins the section called Eifelautobahn. First, the Ville, a densely wooded ridge southwest of Cologne, is crossed, before joining the A 61 from the direction Venlo at the triangle Erfttal. Until the cross Bliesheim in Brühl the A 1 runs with the A 61 on a common, six-lane developed track. After leaving this one crosses the level of Jülich-Zülpicher Börde, bypasses Euskirchen and then rises in the Eifel. At the connection point Blankenheim the provisional end of the northern part of the motorway is reached. The gap closure through the Eifel to Kelberg is in the planning phase. Rhineland Palatinate and Saarland Beyond the state border with Rhineland-Palatinate, the A 1 starts again at the junction Kelberg. A few kilometers further, on the Vulkaneifel triangle near Daun, the A48 starts to Koblenz. At Wittlich the motorway exits the Eifel and connects the A 60 to Belgium. The four-lane federal road 50 developed route towards the Rhine-Main area (Hochmoselübergang with Hochmoselbrücke) is still partially under construction. At Schweich the Moselle is crossed and the A 602 to Trier, which also represents a connection to the A