→(Ankara –) Sincan – Polatli – Eskişehir – Arifiye (– İstanbul): add Ankara Ekspresi, which does full length of the line
This west <==> south curve south west of Polatli connects the Eskişehir (İstanbul) and Konya high speed lines. It is used by high speed services ''(Yüksek Hizli Tren)'' between İstanbul and Konya.
===(Ankara –) Sincan – Polatli – Eskişehir –
Arifiye (– İstanbul)===
[''Bölge'' 2] (ERA 112B4 - 112C4) TR19/2
There are two largely parallel lines between Sincan and Arifiye
, the original 'classic' single track Ankara – İstanbul main line and the Ankara - Eskişehir - Arifiye high speed line. The only trains using the 'classic' line are local services between Ankara and Polatli, plus the following trains as far as Eskişehir:
| 22006 İzmir Mavi
| 19:00 Ankara - İzmir Basmane
| 32005 İzmir Mavi
| İzmir Basmane - 05:35 Eskişehir - Ankara
| style="width:13%"| (ERA 111A2 - 111C1)
| style="width:59%"| One train each way per day between Halkali and Kapikule and one between Halkali and Çerkezköy.
The ''Istanbul-Sofia Express'' runs nightly between Halkali and Sofia.
| Pehlivanköy - Uzunköprü