In October 1969, the JKR was instructed to commence work on the Highway with immediate effect. In early 1970, work started, simultaneously from Gerik and Jeli even before any detailed design or investigations were carried out. Existing earth moving machines from the various states were deployed until new machines for the project were purchased. It was only in early 1973 that the full complement of machines and staff were available for the project to proceed. In the early stages, there was military presence in every kilometre. The road was built to cut off the Communist terrorist from the safe havens in Thailand.