The standard railway gauge is 1435 mm, or 4 feet 8 1/2 inches.
Many other gauges are in use around the world, but the standard gauge is the most common.
Standard North American railroad tracks are 54.5 inches apart. This distance is known as the gauge of the rail.
N Gauge rails are by definition 9mm apart. This is regardless of the scale of the model components, which frequently ranges from 1:148 to 1:160.
15 Feet
20 feet
About 21 inches
Yes, if there is no other force acting upon the railroad track then you would be able to hear the train about a mile away. Unfortunately this is dangerous because there is no way to tell exactly how far away the train is.
The standard distance between the rails on a train track, known as the gauge, is typically 4 feet 8.5 inches (1,435 mm) for standard gauge. However, there are other gauges used in different contexts, such as narrow gauge (less than 4 feet 8.5 inches) and broad gauge (wider than standard gauge). The choice of gauge can affect the stability, speed, and capacity of trains.
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Standard American Gauge is 4 feet 8 and a half inches.
The distance between two rails in a train track is called the gauge. It depends on the company and the location. Narrow gauge rails are cheaper to build and allow a train to turn tighter corners; wide gauge allows for greater stability and therefore speed, and higher weight capacity. The most common gauge internationally is called standard gauge and is 4'8" (1422mm). Other common gauges are: * 5 ' 6 " (1676 mm) * 5 ' 3 " (1600 mm) * 5 ' (1524 mm) * 4 ' 8½ " (1435 mm) * 3 ' 6 " (1067 mm) * 3 ' 3⅜ "(1000 mm) There is a myth that the distance between the wheels for is related to the width of two horses or oxen pulling a cart. It is untrue, but makes for a good story.
Read Paulo Coelho book called The Zahir. Pretty much explains it perfectly.
You Can't Get Far Without a Railroad was created in 1957.