Triangle" in central Jakarta. There are Indonesia's premier financial centre, SCBD, Mega Kuningan, Rasuna Epicentrum as well as along Jalan Jenderal Sudirman, Jalan M.H. Thamrin, Jalan Jenderal Gatot Subroto and Jalan HR Rasuna Said. The Golden Triangle is also known to expatriates and locals as a lifestyle centre of the metropolis. There are countless high-end boutiques, fine restaurants, coffee shops and malls. Kelapa Gading is the newest business district, lifestyle centre and residential areas, located in the north-eastern part of Jakarta. It has several bars and entertainment places that open up until late at night. The development of large scale residential areas and industrial parks in the Jakarta metropolitan area has been induced by infrastructure development, especially toll roads and railways. The Jakarta metropolitan area has been built industrial estate in the outskirts, mainly in Cikarang, home to a dozen industrial estates with more than 2,500 industrial companies. The Cikarang industrial estate occupied a total land area of about 11,000 hectares and became the largest concentration of manufacturing activities in Southeast Asia. Many foreign companies are located in the Cikarang industrial estate, such as from Japan, South Korea, China, Singapore and United States. Transportation The region is partly defined by the areas from which people commute into the city. All municipality and regencies have access to toll road and rail service. At present public transport in Greater Jakarta consists of TransJakarta BRT, KRL Commuterline commuter rail, Jakarta LRT, Soekarno-Hatta Airport Rail Link, and Jakarta MRT. The transit system that is currently under construction is LRT Jabodebek. Jakarta LRT began operation by late 2019, and LRT Jabodebek is expected to open by March 2021. Air The Jakarta metropolitan area has two major airports, Soekarno Hatta International Airport, commonly known as Cengkareng Airport (CGK) and Halim Perdanakusuma International Airport (chiefly domestic). Pondok Cabe Airport in South Tangerang, owned by the state oil company Pertamina, is used for civilian and military airport. Rail The Jakarta metropolitan area is served by KRL Commuterline, a 418 km (260 mi) commuter train comprising five lines (Red/Bogor Line, Green/Rangkasbitung Line, Blue/Cikarang Loop Line, Brown/Tangerang Line and Pink/Tanjung Priok Line) and over 80 stations across the area, plus Lebak Regency in Banten. Urban rail systems in Jakarta include rapid transit system Jakarta MRT, and light rail system Jakarta LRT, and Greater Jakarta LRT. Before Jakarta MRT was opened in 2019, the Jakarta metropolitan area was the world's largest