The special rail cars go on the northern line from Bangkok up to Phitsanulok, and on that stretch they are even faster than special express trains. The following supplementary charges are in effect, regardless of the distance traveled on a train. Second class non-aircon berth on special express trains, upper 100 Baht, lower 150 Baht. In second class aircon carriages, the lower berths are considerably more comfortable as the upper berths are pretty close to aircon openings in the ceiling. Linens and blankets are provided with all sleeping berths.
All express trains have sleeping berths carriages, but only some of the rapid trains.
On all long distance trains, excellent Thai dishes are served either in the carriages or in the restaurant cars. The attendants of sleeping berths cars distribute printed menus which offer the traveler a choice of a number of set menus. Prices are not exactly low but the food is certainly delicious. While there is generally no budget food available on express trains , good and cheap Thai dishes are sold on rapid trains . They are offered in all non-aircon carriages in Styrofoam packs and typically cost just about 20 Baht.