Railway track gauge (1676 mm)
Track gauge
By transport mode
By size (list )
Minimum
Minimum
Fifteen inch
381 mm
(15 in)
Narrow
(1 ft 11+ 5 ⁄8 in)
(2 ft)
(2 ft 3 in)
(2 ft 5+ 1 ⁄2 in)
(2 ft 5+ 15 ⁄16 in)
(2 ft 6 in)
891 mm
900 mm
914 mm
950 mm
(2 ft 11+ 3 ⁄32 in)
(2 ft 11+ 7 ⁄16 in)
(3 ft)
(3 ft1+ 13 ⁄32 in)
Metre
1,000 mm
(3 ft 3+ 3 ⁄8 in)
Three foot six inch
1,067 mm
(3 ft 6 in)
Four foot
1,219 mm
(4 ft)
Four foot six inch
1,372 mm
(4 ft 6 in)
1432 mm
1,432 mm
(4 ft 8+ 3 ⁄8 in)
Standard
1,435 mm
(4 ft 8+ 1 ⁄2 in)
Broad
(4 ft 8+ 7 ⁄8 in)
(4 ft 9+ 3 ⁄32 in)
Leipzig gauge
1,458 mm
(4 ft 9+ 13 ⁄32 in)
Toronto gauge
1,495 mm
(4 ft 10+ 7 ⁄8 in)
(4 ft 11+ 27 ⁄32 in)
(5 ft)
1,581 mm
1,588 mm
1,600 mm
(5 ft 2+ 1 ⁄4 in)
(5 ft 2+ 1 ⁄2 in)
(5 ft 3 in)
Baltimore gauge
1,638 mm
(5 ft 4+ 1 ⁄2 in)
(5 ft 5+ 21 ⁄32 in)
(5 ft 6 in)
Six foot
1,829 mm
(6 ft)
Brunel
2,140 mm
(7 ft 1 ⁄4 in)
Change of gauge
By location
5 ft 6 in / 1,676 mm is a broad track gauge , used in India , Pakistan , western Bangladesh , Sri Lanka , Argentina , Chile , and on BART in the San Francisco Bay Area .
In North America, it is called "Indian gauge", Provincial, Portland, or "Texas gauge". In Argentina and Chile, it is known as "trocha ancha" (Spanish for "broad gauge"). In the Indian subcontinent it is simply known as "broad gauge". It is the widest gauge in regular passenger use anywhere in the world.