"traffic was tailed back backed up for miles because of the accident" in German Traffic was tailed back/backed up for miles because of the accident. Wegen des Unfalls bildete sich ein kilometerlanger Stau. Detailed translations for "traffic was tailed back backed up for miles because of the accident" Traffic was tailed back/backed up for miles because of the accident. Traffic was tailed back/backed up for miles because of the accident. Wegen des Unfalls bildete sich ein kilometerlanger Stau.