Finally, the highway ends at Gambang, Kuantan, Pahang, at its 4-way intersection with the Federal Route 2, the main trunk road of the east and west coasts of Peninsula Malaysia.

[1][2] Sultan Haji Ahmad Shah himself inaugurated the Tun Razak Highway in 1983 when he was the Yang di-Pertuan Agong at that time.

The upgrade project began in September 2015, with the first phase involving the 47-km segment from Gambang to Paloh Hinai, with the cost of RM300 million.

The second phase, which would involve the upgrade works of the remaining 100 km from Paloh Hinai to Segamat, would cost RM1.2 billion.

[7] At most sections, the Federal Route 12 was built under the JKR R5 road standard, allowing maximum speed limit of up to 90 km/h.