What is the size of a standard railroad track?

Steel rails, also called railroad rails, are primarily used for railway tracks in transportation systems. They are a key component of railway systems, providing a stable and durable track for passenger trains, freight trains, and high-speed rail networks or subways.

What is the size of a standard railroad track?

The size of a railroad track refers to its track gauge, the distance between the inner edges of the rails, with the global standard gauge being 1,435 mm (4 ft 8½ in), used by about 55% of the world's railways, while other gauges (narrow or broad) exist, like Russia's 1520mm or some industrial narrow gauges. The specific rail dimensions, like head width, base width, and weight, also vary by region and usage, with common US examples being ASCE 85 or 115RE rails.

Standard Gauge (Most Common)

• 1,435 mm (4 ft 8½ in).
• Used across Europe, North & South America, Asia, Africa, and Australia.
• Also known as Stephenson Gauge or UIC Gauge.

Other Common Gauges

• 1,520 mm (5 ft): Used in Russia, former Soviet countries, Mongolia, and Finland.
• 1,600 mm (5 ft 3 in): Used in Ireland, Australia (Victoria, South Australia) and Brazil.
• 1,067 mm (3 ft 6 in): Common in Japan, New Zealand, South Africa, India, and parts of Australia (Queensland).
• 1,000 mm (3 ft 3 3/8 in): Used in China (some lines), Southeast Asia (Thailand, Malaysia), and parts of Africa and Europe.

Steel Rail Dimensions

Steel rail dimensions vary significantly by standard (EN, DIN, JIS, BS, ASCE) and weight (kg/m or lb/ft), but generally include measurements for the head (top), height, base (bottom), and web (thickness), with common heavy rail sizes like 50kg/m or 60kg/m having heights around 150-170mm and weights from ~49 to over 60 kg/m, while crane rails are larger and lighter rails (e.g., 10kg) are smaller. The gauge, or distance between rails, is typically 1435mm (4 ft 8.5 in) for standard gauge.

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