Roads
In vehicular engineering, various land-based designs (cars, SUVs, trucks, trains, etc.) are rated for their ability to ascend terrain. (Trains typically rate much lower than cars.) The highest grade a vehicle can ascend while maintaining a particular speed is sometimes termed that vehicle's "gradeability" (or, less often, "grade ability"). The lateral slopes of a highway geometry are sometimes called fills or cuts where these techniques have been used to create them.
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10% slope warning sign, Netherlands
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25% slope sign, Wales
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A 1371-metre long stretch of railroad with a 20‰ (2%) slope, Czech Republic
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Slope warning sign, 30% over 1500 m. La route des Crêtes, Cassis, France
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7% descent warning sign, Finland
Read more about this topic: Grade (slope)
Famous quotes containing the word roads:
“Other roads do some violence to Nature, and bring the traveler to stare at her, but the river steals into the scenery it traverses without intrusion, silently creating and adorning it, and is as free to come and go as the zephyr.”
—Henry David Thoreau (1817–1862)
“... deeper
and deeper into Imagination’s
holy forest, as travelers
followed the Zohar’s dusty
shimmering roads ...”
—Denise Levertov (b. 1923)
“Lift your eyes
Where the roads dip and where the roads rise
Seek only there
Where the grey light meets the green air
The hermit’s chapel, the pilgrim’s prayer.”
—T.S. (Thomas Stearns)