Northen route : Bukit Kayu Hitam – Bukit Lanjan
Southern route : Sungai Besi – Senai
The North–South Expressway (NSE) (Malay: Lebuhraya Utara-Selatan; Jawi: ليبوهراي اوتارا-سلتن; Chinese: 南北大道) is the longest expressway in Malaysia with the total length of about 775 km (482 mi) running from Bukit Kayu Hitam in Kedah near the Malaysian-Thai border (connects with Phetkasem Road (Route 4) in Thailand) to Johor Bahru at the southern portion of Peninsular Malaysia and to Singapore. The expressway links many major cities and towns in western Peninsular Malaysia, acting as the ‘backbone’ of the west coast of the peninsula. It is also known as PLUS Expressway, named after the highway’s concessionaire, Projek Lebuhraya Utara Selatan Berhad (North South Expressway Project; abbreviated as PLUS).