Free travel applies to all rural 3rd class commuter trains. Noted by a train number of 4xx on the timetables. Note: these do not operate into Bangkok.Free travel applies to all Bangkok commuter trains. Noted by a train number of 3xx on the timetables. Note: These operate mostly at peak times.Free travel applies to selected intercity 3rd class trains to and from Bangkok. These are Ordinary and some rapid trains marked as 1xx and 2xx on the timetables. The free travel is only valid up to the following... » Read more