Tanjung Malim–Slim River Highway, Federal Route 1, is a major highway in Perak and Selangor state, Malaysia.

This was the first tolled highway in Malaysia.

[1] The road was upgraded into tolled highway in 1966 and it was opened to traffic on same year.

Toll collection began on 6 am on 16 March 1966.

In 1994, with the completion of the North–South Expressway, the toll plaza is removed and it became a toll-free highway.