** headline says that the under trial coaches are fit for 250kmph speed, but the report is silent on the speed at which trials shall be conducted.
** Trials at 180kmph has been conducted in patches mostly falling in Mathura-Kota section with Talgo as well as LHB rakes. Speed beyond 180 kmph is probably not safe on the IR tracks designed for maximum speed of 160kmph.
** A high speed test track is under construction near Jodhpur to facilitate trials at higher speed .