(distance between rails) is 4 feet, 8.5 inches. That’s an exceedingly odd number.
Because the people who built the tramways used the same jigs and tools that they had used for building wagons, which used that wheel spacing.
Why did the wagons have that particular Odd wheel spacing?
Well, if they tried to use any other spacing, the wagon wheels would break on some of the old, long distance roads in England, because that’s the spacing of the wheel ruts.
Imperial Rome built the first long distance roads in Europe (including England ) for their legions. Those roads have been used ever since.
And the ruts in the roads? Roman war chariots formed the initial ruts, which everyone else had to match for fear of destroying their wagon wheels.
Since the chariots were made for Imperial Rome, they were all alike in the matter of wheel spacing. Therefore, the United States standard railroad gauge of 4 feet, 8.5 inches is derived from the original specifications for an Imperial Roman war chariot. In other words, bureaucracies live forever.
When you see a Space Shuttle sitting on its launch pad, you will notice that there are two big booster rockets attached to the sides of the main fuel tank. These are solid rocket boosters, or SRBs. The SRBs are
made by Thiokol at their factory in Utah.
railroad track, and the railroad track, as you now know, is about as wide as two horses’ behinds.
feature Of what is arguably the world’s most advanced transportation system was determined over two thousand
years ago by the width of a horse’s ass.