The axle load of a wheeled vehicle is the total weight felt by the roadway for all wheels connected to a given axle. Viewed another way, it is the fraction of total vehicle weight resting on a given axle. Axle load is an important design consideration in the engineering of roadways and railways, as both are designed to tolerate a maximum weight-per-axle (axle load); exceeding the maximum rated axle load will cause damage to the roadway or rail tracks.
Read more about Axle Load: Railway Use, Roadway Use
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Now the top of Heav’n doth hold,
And the gilded Car of Day,
His glowing Axle doth allay
In the steep Atlantick stream,”
—John Milton (1608–1674)
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They grope the sea for pearls, but more than pearls:
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—Ralph Waldo Emerson (1803–1882)