- RDSO(Research, Development , Standards Organization)
Headquartered at Lucknow , it is Research and Development wing of Indian Railways headed by a Director General. It has well equipped laboratories. It designs, advises, directs on technological developments in IR.
- RRT, Chennai
It consists of a Chairman and 2 members. Its chief function is to look into complaints lodged by commercial bodies and Trade Associations with regard to the freight charges and similar matters concerning Railways.