The North–South Expressway Northern Route is an interstate controlled-access highway running parallel to the northwestern coast of Peninsular Malaysia. The 460-kilometre (290-mile) expressway forms the north section of the North–South Expressway, passing through the northwestern states of Kedah, Penang, Perak and Selangor. The expressway begins at the Bukit Kayu Hitam checkpoint in Kedah, where the Malaysia–Thailand border lies, and ends at Bukit Lanjan in Selangor state where the expressway interchanges with the New Klang Valley Expressway. The expressway is operated by PLUS Expressways.

Tanjong Malim, or Tanjung Malim, is a town in Muallim District, Perak, Malaysia. It is approximately 70 km (43 mi) north of Kuala Lumpur and 120 km south of Ipoh via the North–South Expressway. It lies on the Perak-Selangor state border, with Sungai Bernam serving as the natural divider.