According to CNA, the accident occurred at around 8:00 a.m. on October 11 (local time) at Khlong Khwaeng Klan station in Chachoengsao province, about 50km east of Bangkok, Thailand.
About 60 passengers on the bus were en route to a pagoda in Chachoeng sao province to attend the end of the Buddhist Lunar New Year.
The provincial disaster management agency said that the bus was lying on the railway after the collision. According to Maitree province Governor Tritilanond, about 29 people have been injured so far.
The number of casualties is expected to continue to increase.
Initial images show metal and debris lying around, bodies lying on the railway track and scattered people's belongings.
The bus overturned, the front was severely damaged and rescue workers said a crane was needed to fix the situation.
The Chachoengsao Department of Natural Disaster Prevention and Control said that the police are investigating the cause of the accident.
Such fatal accidents are common in Thailand, which often tops the list of the world's deadliest accidents, with speeding, drunk driving and poor law enforcement.
According to a 2018 report by the World Health Organization, Thailand has the second highest traffic death rate in the world.
Although most of the victims were motorcyclists, bus collisions involving groups of tourists and immigrant workers often caused a stir in public opinion.
In March 2018, at least 18 people were killed and dozens injured when a bus carrying returning from a vacation in northeastern Thailand crashed off the road and crashed into a tree.
