The Suburban Fleet (Turkish: Banliyö vagonları, also known as pierced bellies (Turkish: Karnıyarık)) were passenger railcars used by the Turkish State Railways on their suburban rail operations mainly in Istanbul, Ankara and İzmir. Those cars are kept in the depots as a last resort in emergencies.
| Suburban Fleet | |
|---|---|
 A couple of Regional Cars on a side track at Haydarpaşa Terminal | |
| In service | All retired, stored as a last resort |
| Manufacturer | TÜVASAŞ SGP |
| Built at | Adapazarı Plant |
| Constructed | 1953-1972 |
| Entered service | 1953-2012 |
| Refurbished | 2002-06 |
| Successor | electrical multiple units |
| Operators | Turkish State Railways |
| Specifications | |
| Car body construction | Welded steel |
| Floor height | 1,100.0 mm (3 ft 7+1⁄4 in) |
| Entry | step |
| Doors | 1 to 3 per car |
| Maximum speed | 100 km/h (62 mph)[1] |
| Coupling system | Buffer and chain |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) |