Question

5. Why do the roads in the hills have a gradual slope? What is a wedge used for?
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Answer 1

Explanation:

Roads are built with moderate slopes in steep terrain to make driving safer and easier. Steep roads overwork drivetrains and brakes, and can produce very dangerous driving conditions. Taking a less steep route in road construction may mean adding distance to get from point A to point B, but in the end, it is worth it.

Building on steep hills usually means taking a more gently sloping route, for instance, going around the hill, or in a worst case, actually cutting partially through the hill so the grade isn’t as steep. This means more earth-moving, blasting, and hauling, but the paving process is a little easier, and the traffic is safer, with less wear and tear on vehicles