There is no such definition as an accelerated train: TCDD stated that the concept of "accelerated train" is used in the news about the Ankara-Istanbul high-speed train line and said, "There is no" accelerated train "definition in railway terminology."
In the statement made by the TCDD, it was noted that the news about the Ankara-Istanbul high-speed train line, which was published in the press in the last days, contains incomplete and incorrect information. In the news, the statement emphasized that “high-speed train” and “accelerated train” concepts were used side by side, and that the concept confusion and information pollution were caused:
“Ankara-Eskişehir, the first phase of the Ankara-Istanbul high-speed train line, was opened in 2009. The construction of the Eskişehir-İstanbul (Pendik) section has been completed and the testing and certification works are in the process of being completed. As claimed in the news, the travel time will not be 4 hours and 12 minutes, in the first place, the travel time between the two cities will decrease to 3 and a half hours.
There is no definition of "accelerated train" in railway terminology. The train that had an accident in 2004 is a conventional train, and as stated in all expert reports, the cause of the accident is over-speeding of the train.