Transport in New Zealand, with its mountainous topography and a relatively small population mostly located near its long coastline, has always faced many challenges. Before Europeans arrived, Māori either walked or used watercraft on rivers or along the coasts. Later on, European shipping and railways revolutionised the way of transporting goods and people, before being themselves overtaken by road and air, which are nowadays the dominant forms of transport. However, bulk freight still continues to be transported by coastal shipping and by rail transport, and there are attempts to (re)introduce public transport as a major transport mode in the larger population centres.
Rail transport in New Zealand is an integral part of New Zealand's transport network, with a nationwide network of 4,375.5 km (2,718.8 mi) of track linking most major cities in the North and South Islands, connected by inter-island rail and road ferries. Rail transport in New Zealand has a particular focus on bulk freight exports and imports, with 19 million net tonnes moved by rail annually, accounting for more than half of rail revenue.
State Highway 1 is the longest and most significant road in the New Zealand road network, running the length of both main islands. It appears on road maps as SH 1 and on road signs as a white number 1 on a red shield, but it has the official designations SH 1N in the North Island, SH 1S in the South Island.
Transport in Auckland, New Zealand's largest city, is defined by factors that include the shape of the Auckland isthmus, the suburban character of much of the urban area, a history of focusing investment on roading projects rather than public transport, and high car-ownership rates.
State Highway 20 (SH 20), also known as the Southwestern Motorway, is a New Zealand state highway linking State Highway 1 at Manukau with State Highway 16 in Point Chevalier, via Māngere and Onehunga. Along with its spurs, State Highway 20A and 20B, the state highway serves Auckland Airport, the country's largest, therefore making SH 20 a key arterial route connecting the airport to the wider Auckland region and most of the upper North Island. The route also forms the southern part of the Western Ring Route, a 48 kilometres (30 mi) motorway route bypassing central Auckland.
The Johnsonville–Porirua Motorway is a motorway in Wellington, New Zealand. The majority of the motorway forms part of State Highway 1, the main route of traffic in and out of the city, with the northernmost 2.1 km (1.3 mi), formerly part of SH 1 until 7 December 2021, designated as State Highway 59. Completed in the 1950s, it was New Zealand's first motorway.
State Highway 5, one of New Zealand's eight national highways, runs from State Highway 1 at Tīrau, in the south Waikato, to State Highway 2, close to the Hawkes Bay coast at Bay View, 10 km north of Napier. It is the second shortest of the national highways.
State Highway 3 (SH 3) is one of New Zealand's eight national state highways. It serves the west coast of the country's North Island and forms a link between State Highway 1 and State Highway 2. Distances are measured from north to south.
State Highway 2 runs north–south through eastern parts of the North Island of New Zealand from the outskirts of Auckland to Wellington. It runs through Tauranga, Gisborne, Napier, Hastings and Masterton. It is the second-longest highway in the North Island, after State Highway 1, which runs the length of both of the country's main islands.
The Waikato Expressway is a dual carriageway section of State Highway 1 in New Zealand's Waikato region. Constructed in stages, it forms part of the link between Auckland and Hamilton. Currently stretching from Auckland to south of Cambridge, the first section of the highway was built in 1993. Throughout its lifetime, it has undergone many upgrades to optimise traffic flow throughout the Waikato region, including various bypasses of many towns in the region, culminating with Hamilton in 2022.
State Highway 21 (SH 21) is a short 6.7-kilometre (4.2 mi) stretch of highway in the North Island of New Zealand. It links State Highway 1, Waikato Expressway at Tamahere and State Highway 3 at Ōhaupō. Its main destination is Hamilton Airport and Mystery Creek, where the National Agricultural Fieldays are held.
State Highway 57 (SH 57) is a New Zealand state highway, linking State Highway 1 north of Ohau to State Highway 3 east of Ashhurst, via Levin, Shannon, Massey University and the southern suburbs of Palmerston North. The highway connects State Highway 1 traffic coming north from Wellington to the city of Palmerston North, and further to the Manawatū Gorge, allowing passage to the eastern side of the North Island and to the twin cities of Napier and Hastings. The highway is classified by the NZTA as a national strategic road.
State Highway 17 was the designation for a 32-kilometre stretch of highway in northern Auckland in the North Island of New Zealand from December 1999 to October 2012, now designated as Urban Route 31. It consists of the Hibiscus Coast Highway, Dairy Flat Highway and Albany Expressway, and links State Highway 1 at Puhoi in the north with SH 1 at Albany in the south. Its main destinations are the towns of Waiwera, Orewa, Red Beach, Whangaparaoa, Silverdale, Dairy Flat and the suburb of Albany. Prior to its inception as SH 17, the road was part of SH 1, and was redesignated as SH 17 in 1999 when the Northern Motorway was extended northwards and took over the designation of SH 1.
State Highway 39 (SH 39) is a New Zealand state highway that forms a western bypass of the city of Hamilton. Gazetted in 1999, it is a generally quicker route to get between Auckland and New Plymouth as well as connecting to the Waitomo Caves, just south of the SH 39 southern terminus. The southernmost 14 km section has a concurrency with SH 31, as this highway has existed for much longer.
State Highway 23 (SH 23) is a New Zealand state highway that connects the towns of Raglan and Hamilton.
State Highway 15 (SH 15) is a New Zealand state highway in the Northland region of the North Island. It is 126.5 km (78.6 mi) long and provides an alternative route to SH 1 between the Kaikohe and Whangārei areas; a spur also links SH 1 with the Marsden Point Oil Refinery and Northport.
State Highway 27 (SH 27) is a state highway in the Waikato region of the North Island of New Zealand. It is an important north–south link along the Waihou/Piako valley and forms an important transport route across the mostly dairy farming Matamata-Piako District. SH 27, in conjunction with SH 2, is often used as an alternative route to SH 1 between Auckland and Tauranga, Rotorua and Taupō.
State Highway 51 is a New Zealand state highway that runs between Napier and Hastings via Clive. Known locally as the Coastal Route, it was the main route between the two cities prior to the completion of the Hawke's Bay Expressway.
