Hat Yai
The "Hat Yai Express" (Bangkok - Hat Yai) was substituted during the reduction of international service as well as during the suspension of international services even though it was introduced on 3 April 1939 (every Friday) to meet increasing demand from those who lived in southern provinces. The "Hat Yai Express" was extended to Su-ngai Kolok in January 1942. It was back to Hat Yai after 1945.