Trams in Sofia
Metro system
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Began operation: January 1, 1901
Lines: 16
Operator(s): Sofia Electric Transport JSC
Owner(s): Stolichna Municipality
Route length: ~ 154 km (96 mi)
Stock: 176
Track gauge: 1,009 mm (3 ft 3+23⁄32 in); 1,435 mm (4 ft 8+1⁄2 in) standard gauge