Economic Zone in Quy Nhon, and Van Phong Economic Zone in northern Khánh Hòa province. All four zones have large areas of land, major infrastructure and industrial projects. However, in contrast to the smaller industrial parks, they are not limited to industrial sectors. Infrastructure Transport Vietnam's main north-south transport corridors run through the whole South Central Coast region. The North–South Railway runs along the region, with Reunification Express stops at Đà Nẵng Railway Station, Diêu Trì Railway Station, and Nha Trang Railway Station. Stations with less frequent stops are Tam Kỳ Railway Station, Quảng Ngãi Railway Station, Quy Nhơn Railway Station, Tuy Hòa Railway Station, Tháp Chàm Railway Station, Mương Mán Railway Station, as well as several local railway stations. The two-lane National Route 1 connects all major cities of the region to the rest of the country (Quy Nhon and Nha Trang by extension 1D and 1C). The Ministry of Transport is planning the construction of a 139.5 km four-lane highway from Da Nang to Quảng Ngãi province in cooperation with foreign donors. The region is connected to the Central Highlands by several national roads at Phan Rang (National Road 27 to Da Lat), Ninh Hòa, Khánh Hòa province (26 to Buôn Ma Thuột), Tuy Hòa (25 to Pleiku via Ayun Pa) Quy Nhon (19 to Pleiku), and western Quảng Nam province (14/ Ho Chi Minh Road to Kon Tum). The largest airport in the region is Da Nang International Airport with flights to various cities in Vietnam, Singapore, Siem Reap, Guangzhou, Shanghai and seasonal flights to other cities in mainland China and Taiwan. The region's second international airport at Cam Ranh (serving Nha Trang flights to various cities in Vietnam, Guangzhou, Shanghais, Hong Kong, etc.). Phu Cat Airport (serving Quy Nhon) and Dong Tac Airport (serving Tuy Hòa) have only domestic flights. Chu Lai in southern Quảng Nam province has an international airport, but only domestic flights. Da Nang Port and Quy Nhơn Port are the region's major ports. Another major port is under construction at Vân Phong in Khánh Hòa province. Energy The South Central Coast has limited potential for hydro-power plants and has therefore not been a major part of EVN's mostly hydro-focused strategy. However, it is at the forefront of many of Vietnam's efforts to diversify electricity sources away from hydro-power. The country's first nuclear power plant is under construction in Ninh Thuận province. A