standard gauge: 3,483 km 1.435-m gauge (3,472 km electrified)
narrow gauge: 1,004 km 1.000-m gauge (974 km electrified); 46 km
0.800-m gauge (46 km electrified) (2003)

Syria
total: 2,711 km
standard gauge: 2,460 km 1.435-m gauge
narrow gauge: 251 km 1.050-m gauge (2003)

Taiwan
total: 2,544 km
narrow gauge: 1,108 km 1.067-m gauge (519 km electrified)
note: 1,400 km .762-m gauge (belonging to the Taiwan Sugar
Corporation and to the Taiwan Forestry Bureau used to haul products
and limited numbers of passengers (2003)

Tajikistan
total: 482 km
broad gauge: 482 km 1.520-m gauge (2003)

Tanzania
total: 3,690 km
narrow gauge: 969 km 1.067-m gauge; 2,721 km 1.000-m gauge (2003)

Thailand
total: 4,071 km
narrow gauge: 4,071 km 1.000-m gauge (2003)

Togo
total: 568 km
narrow gauge: 568 km 1.000-m gauge (2003)

Tunisia
total: 2,152 km
standard gauge: 468 km 1.435-m gauge
narrow gauge: 1,674 km 1.000-m gauge (65 km electrified)
dual gauge: 10 km 1.435-m and 1.000-m gauges (three rails) (2003)

Turkey
total: 8,671 km
standard gauge: 8,671 km 1.435-m gauge (2,122 km electrified) (2003)

Turkmenistan
total: 2,440 km
broad gauge: 2,440 km 1.520-m gauge (2003)

Uganda
total: 1,241 km
narrow gauge: 1,241 km 1.000-m gauge (2003)

Ukraine
total: 22,473 km
broad gauge: 22,473 km 1.524-m gauge (9,250 km electrified) (2003)

United Kingdom
total: 17,186 km
standard gauge: 16,726 km 1.435-m gauge (5,243 km electrified)
broad gauge: 460 km 1.600-m gauge (in Northern Ireland) (2003)

United States
total: 228,464 km
standard gauge: 228,464 km 1.435-m gauge (2003)

Uruguay
total: 2,073 km
standard gauge: 2,073 km 1.435-m gauge
note: 461 km have been taken out of service and 460 km are in
partial use (2003)

Uzbekistan
total: 3,950 km
broad gauge: 3,950 km 1.520-m gauge (620 km electrified) (2003)

Venezuela
total: 682 km
standard gauge: 682 km 1.435-m gauge (2003)

Vietnam
total: 2,600 km
standard gauge: 178 km 1.435-m gauge
narrow gauge: 2,169 km 1.000-m gauge
dual gauge: 253 km three-rail track combining 1.435-m and 1.000-m
gauges (2003)

World
total: 1,115,205 km
broad gauge: 257,481 km
standard gauge: 671,413 km
narrow gauge: 186,311 km (2003)

Zambia
total: 2,173 km
narrow gauge: 2,173 km 1.067-m gauge
note: includes 891 km of the Tanzania-Zambia Railway Authority
(TAZAR