Possibly best way to Auderath: Not sure which way you normally go when you come over. But my brother (he is a long-distance lorry driver and basically lives on the motorways in Belgium, France and Germany) just told me it might be best to go on the E40 to Aachen, then on the A4 towards Köln, at junction 9 on the A61 towards Koblenz and at junction 34 via B262 to the A48 towards Trier and Auderath. He said the other route is filled with loads of road works and one lane traffic. On the route I've just described there are also about two road works but by far not as many as on the other route. Just a hint.