which was only published by the Malaysian Public Works Department (JKR) later in 1986, resulting the section to be grandfathered as a part of the North–South Expressway E1. After the North–South Expressway was completed in 1994, the expressway took the role of the Federal Route 1 as the main backbone route in Peninsular Malaysia.
Apart from the Jitra–Bukit Kayu Hitam section that was being upgraded to be a part of the North–South Expressway E1, there are some other sections of the FT1 highway that have been upgraded to toll roads and controlled-access expressways. For example, the Skudai Highway FT1 was completed in November 1985 as a tolled divided highway until 1 March 2004. Meanwhile, Jalan Cheras–Kajang FT1 was upgraded from the former 2-lane road into an 8-lane controlled-access expressway known as the Cheras–Kajang Expressway E7/FT1. The expressway was opened to traffic on 15 January 1999.
Much of the road remains in use, although in September 2009, portions of the road to north of Ipoh were temporarily closed to facilitate double tracking and electrification along the Ipoh–Padang Besar railway line.
Simpang Ampat Melaka Cheng Peringgit Alor Gajah
North–South Expressway Southern Route
Kuala Lumpur
Johor Bahru ||T-junctions
