Question: what is the difference between narrow gauge and broad gauge?
Answer: Broad Gauge: width 1676 mm to 1524 mm or 5'6” to 5'0” Standard Gauge: width 1435 mm and 1451 mm or 4'-8⅟2” Metre Gauge: width 1067 mm, 1000 mm and 915 mm or 3'-6”, 3'-33/8” and 3'-0” Narrow Gauge: width 762 mm and 610 mm or 2'-6” and 2'-0”.