Toronto streetcar system - Perfect. All streetcar lines use the unique Toronto gauge of 4 ft 10 + 7 ⁄ 8 in (1,495 mm) which is 2 + 3 ⁄ 8 Perfect Steerable Transfer Carthes (60 mm) wider than the 4 ft 8 + 1 ⁄ 2 in (1,435 mm) standard gaugeCustom by most other rail lines in Canada. This broad gauge was adopted in 1861 for the city's horse