Malaysia Federal Route 500

Federal Route 500 (formerly Sabah State Route SA3 or Route A3) is a 163-kilometre (101 mi) federal highway in Sabah, Malaysia, connecting Kota Kinabalu to Tenom.^[1] It serves as the main highway from Kota Kinabalu to towns and villages in the Interior Division of Sabah. Federal Route 500, which connects the town of Penampang to Tambunan, known as the Penampang–Tambunan Highway, crossing the Crocker Range near Mount Alab, with hairpin turns. It was also one of the five highways in Sabah crossing the Crocker Range; the Tamparuli–Ranau Highway, Kimanis–Keningau Highway and Tenom–Sipitang Highway are the other three and the new highway, Interior North–South Highway.

While the original Route SA3 is longer, only the section between Kota Kinabalu to Tenom is recommissioned as a federal highway; the section between Tenom to Paal retains its state highway code, while the remaining section from Paal to Kuala Tomani was renumbered as Route SA33, following the completion of Tenom–Sipitang Highway in 2007 which then commissioned as part of Sabah State Route SA3.