Asian Highway 18 is a highway route included in Asian Highway Network, running from Hat Yai in Thailand to Johor Bahru, Malaysia. Route AH18 runs along main eastern coastal road in southern Thailand and also along Federal Route 3 of Malaysia. List of junctions, towns and cities Thailand AH18 runs along Thailand National Route 43 from Hat Yai to Nong Chik, then Route 42 from Nong Chik to Narathiwat then Route 4084/4057 to Su Nhai Kolok. HAT YAI and Route AH2 Chana Ban Lam Phai Khok Pho and route 409 Ban Bo Metchun Nong Chik PATTANI and Route 410 Yaring Sai Buri Bacho Ton Sai Yi Ngo NARATHIWAT Tak Bai Sungai Kolok (Malaysia - Thailand border) Malaysia Kelantan Terengganu Pahang Johor (see also Malaysia Federal Route 3, Kuantan Bypass, Kota Tinggi Bypass and Tebrau Highway) Asian Highway Network