It is one of two east-west transnational links in West Africa and runs inland from and, for most of its length, roughly parallel to the Trans–West African Coastal Highway with a separation of about 900 km (559 mi).
它是在西部非洲的两个东西向的跨国公路之一，从内陆运行，大致平行于非洲西部沿海横贯高速公路，约900公里（559英里）的距离。