original: Moundou is situated on one of the main roads in southern Chad.
simplifications: Moundou is on one of the main roads in southern Chad. Moundou is on the main road in southern Chad. Moundou is on a main road in southern Chad. Moundou is located on a main road in Chad. Moundou lies on a major road in southern Chad. Moundou is on one of the main roads in southern Chad. Moundou is on one of the main roads in southern Chad. Moundou is near a main road in the south part of Chad. Moundou is located on one of the main roads in southern Chad. Moundou is located on one of the main roads in southern Chad.