s Highway 1 is a network of highways that circumnavigate the country, joining all mainland state capitals. At a total length of approximately it is the longest national highway in the world, surpassing the Trans-Siberian Highway and the Trans-Canada Highway. A part of the highway network is traversed by over a million people every day.
History
Highway 1 was created as part of the National Route Numbering system, adopted in 1955. The route was compiled from an existing network of state and local roads and tracks. Highway 1 is the only route to reach across all Australian states, plus the Northern Territory. Many of the other national routes are tributaries of Highway 1. Under the original Highway 1 scheme, certain major traffic routes that ran parallel to the main route were designated National Route Alternative 1. Most of these route designations have been replaced by either a state route designation, or an alpha-numeric route designation, depending on which state the section is in. An example of the Alternative 1 designation remaining is on the old Princes Highway route from Dandenong to South Melbourne in Victoria.
Route markers
The entirety of Highway 1 was originally marked with a National Route 1 shield. In 1974, the segments of the route that were declared part of the National Highway network were updated to use the National Highway shield. Since that time, all states and territories except for Western Australia have adopted alphanumeric route numbers. As a consequence, much of Highway 1 is now marked with a M1, A1 or B1 route marker. A notable exception is in Tasmania, which was the first state to adopt alphanumeric route numbers but Highway 1 is still marked with a National Highway 1 shield. In South Australia, sections of Highway 1 which were once part of the National Highway are marked as A1 or M1 but retain the National Highway "shield".
The section from the eastern end of the Carpentaria Highway at Borroloola in the Northern Territory to the western end of the Gulf Developmental Road near Normanton in Queensland is part of the Savannah Way but has no highway name/s. Wollogorang Road runs from Borroloola to the NT/QLD border, and Westmoreland Road runs from there to Doomadgee. From there Doomadgee Road runs to Burketown, and Nardoo Burketown Road then runs to the Leichhardt River. Burketown Normanton Road runs from the river to the Burke Developmental Road near Normanton. National Highway 1 follows this south for to the Gulf Developmental Road.
Road conditions
With such a vast length, road conditions vary greatly; from multi-lane freeways in populous urban and rural areas, to sealed two-laners in remote areas, such as the Nullarbor Plain, to single lane roads, such as in northern Queensland. Some stretches are very isolated, such as the Eyre Highway, which crosses the Nullarbor Plain, and the Great Northern Highway, which runs close to the north-western coastline. Isolated roadhouses serving the small amount of passing traffic are often the only signs of human activity for hundreds of kilometres. Highway 1 has been described as a "death trap", particularly two-lane sections in northern Queensland, due to driver fatigue. The vast distances between destinations and limited rest areas, especially those suitable to trucks, contribute to the problem.
Sights
Highway 1 covers practically every major inhabited part of Australia. Large capital cities, busy holiday resorts, dramatic coastlines, forests ranging from tropical to temperate gum forests, giant karri stands, scrubland, deserts, and huge tropical swamps are some of the variety of landscapes that can be found along the route. Stretches of Highway 1 are very popular with interstate and overseas tourists. A drive around Highway 1 with a major detour to Uluru and back again practically covers most of Australia. The number 1 shield became part of the bush landscape to many travellers, truckers/truckies, and country people.
Record
On 18 June 2017 team Highway 1 to Hell set a new record for a complete lap of Australia. While there have been previous attempts which skipped inland direct to Mt Isa, the Highway 1 to Hell team travelled the route of Highway 1 skipping Tasmania's stretch of road in 5 days, 13 hours and 43 minutes.