Sultan Abdul Halim Highway
Sultan Abdul Halim Highway, Federal Route 1, is a broad and busy road link to Alor Star, Kedah, Malaysia via the North South Expressway from Kuala Lumpur and Penang. It was named after Sultan Abdul Halim of Kedah.
List of interchanges
| km | Exit | Interchange | To | Remarks |
| Alor Setar | Masjid Zahir Balai Nobat Istana Lama | T-junctions | ||
| Sungai Kedah Bridge | Wan Mat Saman's Aqueduct monument | |||
| Kampung Seberang Perak | West Kampung Seberang Perak Dr Mahathir Mohammad Birthplace | T-junctions | ||
| Pekan Simpang Kuala | West Kuala Kedah Highway Kuala Kedah Langkawi Island East Jalan Alor Mengkudu Alor Mengkudu | Junctions | ||
| Alor Setar South | Northwest Alor Setar Bypass Kangar Kuala Kedah East North–South Expressway Northern Route Bukit Kayu Hitam Penang Ipoh Kuala Lumpur | Junctions | ||
| South Sungai Petani Gurun Kota Sarang Semut |