page_title: Eyre Highway
section_title: Route description
hierarchical_section_title: Eyre Highway / Route description
caption_attribution_description: English: A set of road signs just west of the Nullarbor Roadhouse, South Australia, warning of camels, wombats and kangaroos crossing the Eyre Highway for the next 96 km in a westerly direction. A couple of visitors to Australia, Hannah and Toni, are sitting on the highway at right.
context_page_description: Eyre Highway is a 1,660-kilometre highway linking Western Australia and South Australia via the Nullarbor Plain. Signed as National Highways 1 and A1, it forms part of Highway 1 and the Australian National Highway network linking Perth and Adelaide. It was named after explorer Edward John Eyre, who was the first European to cross the Nullarbor by land, in 1840–1841. Eyre Highway runs from Norseman in Western Australia, past Eucla, to the state border. Continuing to the South Australian town of Ceduna, it then crosses the top of the Eyre Peninsula before reaching the city of Port Augusta in South Australia.
  The construction of the East–West Telegraph line in the 1870s, along Eyre's route, resulted in a hazardous trail that could be followed for interstate travel. A national highway was called for, but the federal government did not see the route as important enough until 1941, when a war in the Pacific seemed imminent. The highway was constructed between July 1941 and June 1942, but was trafficable by January 1942.
context_section_description: Eyre Highway is the only sealed road linking the states of Western Australia and South Australia, running east from  Norseman in Western Australia for 1,200 kilometres (750 mi) across the Nullarbor Plain to Ceduna, South Australia. It then crosses the top of the Eyre Peninsula as it continues eastwards for 470 kilometres (290 mi), before reaching the city of Port Augusta. Eyre Highway is part of the National Highway route between Perth and Adelaide, and also forms part of Australia's Highway 1. It is signed as National Highway 1 in Western Australia, and National Highway A1 in South Australia. The vast majority of the highway is a two-lane single carriageway with a speed limit of 110 kilometres per hour (68 mph), except in and around built-up areas. Road trains (A-double or B-triple) up to 36.5 metres (120 ft) are permitted on Eyre Highway, but are limited to 100 kilometres per hour (62 mph).
  The Western Australian section of Eyre Highway is on the western side of the Nullarbor Plain; the South Australian section crosses the eastern section of the Nullarbor Plain, and the top of the Eyre Peninsula. The Nullarbor gets its name from Latin for "no tree", and the typical view is that of a straight highway and practically unchanging flat saltbush-covered terrain, although some parts are located on ridges. The Eyre Peninsula has been extensively cleared for agriculture, although there are remnant corridors of native eucalyptus woodland alongside its roads.
  Main Roads Western Australia and the Department of Planning, Transport and Infrastructure in South Australia monitor traffic volume across the states' road networks, including various locations along Eyre Highway. In Western Australia, the recorded traffic volumes ranged between 430 and 760 vehicles per day in 2013/14. In South Australia, the estimated annual average daily traffic as of September 2015 varied between 500 and 1500 west of Lincoln Highway, and was 2700 to the east.
  Eyre Highway was assessed by the Australian Automobile Association in 2011 to be among the lowest risk highways in the country, based on  total number of casualty crashes per length of road. However, individual risk based on casualty crash rates per vehicle kilometre travelled was assessed as high for the 95-kilometre (59 mi) section east of Yalata to Fowlers Bay, medium for a 106-kilometre (66 mi) section from Fowlers Bay to Ceduna, low-medium between Ceduna and Port Augusta, and low west of Yalata. In 2013, Eyre Highway similarly received a lower safety rating for the South Australian sections, compared to the Western Australian section. Out of five stars, approximately 10% was rated as one- or two-star in Western Australia, generally towards the Norseman end, and 91% was rated three- or four-star. In South Australia, 49% was rated as one- or two-star, mostly from Yalata to Ceduna, and across the Eyre Peninsula, with the remaining 51% rated as three- or four-star.
caption: Eyre Highway crosses the flat terrain of the Nullarbor
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