calling at all stations and all railway halts, originating or terminating outside Bangkok. Excursion - special services running on weekends such as the weekend Nam Tok Sai Yok Noi and Suan Son Pradiphat services, or services running on specific days or time periods such as the Pa Sak Jolasid Dam excursion train running only during the winter and the steam train services on designated days. Long-distance services SRT operates long distance passenger services on the following lines: Northern Line Bangkok-Ayutthaya-Lopburi-Nakhon Sawan-Phitsanulok-Lampang-Chiang Mai Northeastern Line Bangkok-Ayutthaya-Saraburi-Nakhon Ratchasima-Khon Kaen-Udon Thani-Nong Khai Bangkok-Ayutthaya-Saraburi-Nakhon Ratchasima-Buriram-Surin-Sisaket-Ubon Ratchathani Eastern Line Bangkok-Chachoengsao-Prachinburi-Kabin Buri-Sa Kaeo-Aranyaprathet Bangkok-Chachoengsao-Chonburi-Pattaya-Ban Phlu Ta Luang Southern Line Bangkok-Nakhon Pathom-Hua Hin-Surat Thani-Hat Yai-Butterworth (Malaysia)(International Express) Bangkok-Nakhon Pathom-Hua Hin-Surat Thani-Hat Yai-Su-ngai Kolok Bangkok-Nakhon Pathom-Hua Hin-Surat Thani-Thung Song-Nakhon Si Thammarat Bangkok-Nakhon Pathom-Hua Hin-Surat Thani-Thung Song-Kantang Bangkok-Nakhon Pathom-Kanchanaburi-Nam Tok International services Until 2016, SRT operated international services to Butterworth in Penang, Malaysia, in conjunction with Malaysian state operator KTM. Direct trains from Bangkok now only run as far as Padang Besar, due to the opening of KTM ETS. Since 2021, there 3 return trains operate from Hat Yai Junction and terminate at Padang Besar across the Malaysia–Thailand border. SRT also allows operation of the Eastern and Oriental Express on their tracks which runs from Singapore to Bangkok and vice versa, with a few trips to Laos and Chiang Mai Province. A link across the First Thai–Lao Friendship Bridge to Thanaleng railway station, near Vientiane, opened in March 2009. In December 2010, following Chinese plans to extend their standard-gauge railway network to Xishuangbanna on the China–Laos border and further into Laos, the Thai government agreed to start negotiations on building a standard-gauge network. This would initially involve two lines: from Bangkok to the Lao border, and a longer line from Bangkok along the peninsula to the Malay border. The rail link to Cambodia via Poipet from the railhead at Aranyaprathet was constructed in 1941, but was closed in 1961 due to strained Thai-Cambodian relations during the Cold War. The rail connection was repaired and reopened in April 2019. Cross-border services briefly ran until it was suspended by the outbreak of COVID-19. Currently, no cross-border services operate. Railway connections to Myanmar (Burma), notably the infamous Death Railway, are defunct. Rail links to adjacent countries Malaysia - same gauge Padang Besar Checkpoint: open Su-ngai Kolok- Rantau Panjang Checkpoint: tracks connected but rail checkpoint closed, may reopen. Laos - same gauge Thai-Lao