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# How wide is standard gauge track?

## How wide is standard gauge track?

4 feet, 8.5 inches
How wide are railroad tracks? The US standard railroad gauge is 4 feet, 8.5 inches (Gauge means width between the two rails). The U.S. federal safety standards allow the standard gauge to vary from 4 ft 8 in (1,420 mm) to 4 ft 9 1⁄2 in (1,460 mm) for operation up to 60 mph (97 km/h).

What is the narrowest railway gauge?

A narrow-gauge railway (narrow-gauge railroad in the US) is a railway with a track gauge narrower than standard 1,435 mm ( 4 ft 81⁄2 in). Most narrow-gauge railways are between 600 mm ( 1 ft 115⁄8 in) and 1,067 mm (3 ft 6 in).

### What is the widest railway gauge?

Broad gauge of 1,676 mm (5 ft 6 in), commonly known as Indian gauge, is the dominant track gauge in India, Pakistan, Bangladesh, Sri Lanka, Argentina, Chile, and on BART (Bay Area Rapid Transit) in the San Francisco Bay Area. This is the widest gauge in common use anywhere in the world.

How is railway gauge measured?

The gauge of a railroad track is simply the distance between the two running rails. This distance is measured against the inside faces of the rail heads at some distance down from the top of the rails. This distance down is known as the “gauge plane”.

#### Why train tracks are that wide?

In the thread, Holohan contends that the standard railroad gauge in the U.S.—4 feet, 8.5 inches—derives from the way that rail lines were built in England, where engineers based the width of their railroads on the spacing of road ruts in Imperial Rome, which were in turn designed to accommodate the size of horses’ rear …

For hilly areas and thinly populated areas, narrow gauge is adopted.

## Why narrow-gauge is used in hilly areas?

The narrower gauge enables tighter curves to be taken, especially in valleys and in generally difficult terrain. It is also shorter than normal railways, thus requiring less space at train stations.

Why are train tracks 4 feet 8.5 inches?

The answer given is that English ex-patriots built U.S. railroads, and 4 feet 8-1/2 inches was the standard railroad track gauge in England because the railroad tracks were built on top of road ruts created by the Romans to accommodate their war chariots. Eventually, railroad tracks were laid on top of the road ruts.

### Why are railroad tracks 4 feet 8 inches?

Stephenson had to subtract 3-1/2 inches for the railroad car wheel spacing making them 4 feet 8-1/2 inches. As railroad track technology improved so that the train wheels ran on top of the tracks, the tracks were moved closer to fit the rail car widths.

Are Russian train tracks wider?

The standard rail track in Russia is significantly wider than the one in Europe. In the 19th Century Russia became one of the first countries in the world to introduce a single gauge standard. The Russian gauge of 5 ft / 1520 mm was approved as the new standard on 12 September 1842.

#### What are the dimensions of a railroad track?

The charts below list common railroad track dimensions such as ASCE Rail, 115Re Rail, UIC60 Rail, DIN Rail, other Crane rail, and more. Some of the mill marks on rails are shown too. Mo. Of inertia (cm4)

How are gauges measured on a railway track?

This list presents an overview of railway track gauges by size. A gauge is measured between the inner faces of the rails. For ridable miniature railways and minimum gauge railways, the gauges are overlapping. There are also some extreme narrow gauge railways listed.

## What’s the track gauge of a Lionel train?

With a track gauge of 16.5 mm and a scale of 1:87, HO is the most common model train size today. Lionel has manufactured HO trains several times in its history.

How big is the standard gauge railway in Toronto?

Modern almost standard gauge railways. The Toronto Transit Commission uses 1,495 mm (4 ft 10 7⁄8 in) gauge on its streetcar and subway lines, which was actually closer to 1,520 mm ( 4 ft 11 27⁄32 in) gauge. However, the Eglinton Crosstown Line will use 1,435 mm ( 4 ft 8 1⁄2 in) gauge.