A great example of how CRRC CDA5B1s are used for freight as two of the class cross at Chachoengsao, 

Even on this Sunday (1 September 2024), there is no let up in the flow off goods from Thailand's deep sea port at Laem Chabang and beyond, to the eastern Bangkok industrial complex at Lat Krabang. The two engines, 5230 and 5247 are part of a fleet of 50 introduced in 2022.