Yezin Agricultural University of the Myanmar Agricultural Service. The aim is to "expose students to their specialized crop and do more research in order to become crop specialists". The farms growing the specialized crops are: paddy in Hmawbi in Yangon Region; maize and cereals in Aungban in Shan State; pulse and oil crops in Magway in Magway Region; cotton in Nangyaw in Mandalay Region; sugarcane in Nyaungbintha in Bago Region; perennial crops in Hpa Auk in Mon State, and horticultural crops in Hlegu in Yangon Region. Fourth-year students must take one elective subject from among agronomy, agricultural botany, agricultural chemistry, entomology, plant pathology,
Yangon passengers a day. All buses and 80% of the taxis in Yangon run on compressed natural gas (CNG), following the 2005 government decree to save money on imported petroleum. Highway buses to other cities depart from Dagon Ayeyar Highway Bus Terminal for Irrawaddy delta region and Aung Mingala Highway Bus Terminal for other parts of the country. On 16 January 2017, city bus network system Yangon Bus Service (YBS) was created. Motor transportation in Yangon is highly expensive for most of its citizens. As the government allows only a few thousand cars to be imported each year in a country