The Coolgardie–Norseman stretch (National Highway 94) forms part of the Perth to Adelaide National Highway route and has a higher proportion of heavy traffic. This section passes through an undulating countryside, mainly dotted with patches of trees, scrub and salt lakes. The interstate traffic continues eastwards via Eyre Highway from its junction in Norseman. The Norseman–Esperance portion (National Route 1) is a part of Australia's Highway 1. The scenery changes to agricultural land, and on approach to Esperance it passes near lakes and hillsides.