 Krottelbach lies on "Landesstraße" 352, which branches off "Landesstraße" 350 near Herschweiler-Pettersheim and links with "Bundesstraße" 420 between Altenkirchen and Frohnhofen.Within the village itself, "Kreisstraße" 11 branches off "Landesstraße" 352 and leads through the woodlands west of the village to the boundary with the Saarland, and onwards to the neighbouring village of Bubach.To the northeast runs the Autobahn A 62 (Kaiserslautern–Trier).