High Speed Railway and High Standard Railway in Türkiye. It is the busiest high-speed railway in Türkiye. TCDD HT80000 (Siemens Velaro) is usually used on this railway. Operated by TCDD TAŞIMACILIK A.Ş.
Sadly I think the only way we would see a Turkish route in the game is if, 1. The guys who did the excellent TSC route were to turn their attention to TSW or, 2. An enterprising third party manages to produce something in the public editor. With DTG only just turning their attention to other European areas (Holland) anything more exotic probably a long way off.
Turkey has recently developed high-standard railways rapidly. I think the addition of the Ankara - Eskişehir route will add a new atmosphere to the game.