Ruling Gradient
The ruling gradient of a section of railway line between two major stations is the gradient of the steepest stretch. The ruling gradient governs the tonnage of the load that the locomotive can haul reliably.
Read more about this topic: Hillclimbing (railway)
Famous quotes containing the word ruling:
“In every one of us there are two ruling and directing principles, whose guidance we follow wherever they may lead; the one being an innate desire of pleasure; the other, an acquired judgment which aspires after excellence.”
—Socrates (469–399 B.C.)