However , on 1 October 1987 the closed - toll system came into force along the Kuala Lumpur -- Ayer Keroh and Ipoh -- Changkat Jering stretches .
Then the Ipoh -- Changkat Jering and Seremban -- Ayer Keroh stretches , which were opened to traffic in 1986 .
On 1 October 1987 the closed - toll system came into force along the Kuala Lumpur -- Ayer Keroh and Ipoh -- Changkat Jering stretches .
Then the Ipoh -- Changkat Jering and Seremban -- Ayer Keroh stretches , which were opened to traffic in 1986 .