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Which design element is crucial for ensuring safe sight distance on highways?

Practice Questions

Q1
Which design element is crucial for ensuring safe sight distance on highways?
  1. Lane width
  2. Vertical alignment
  3. Shoulder width
  4. Pavement texture

Questions & Step-by-Step Solutions

Which design element is crucial for ensuring safe sight distance on highways?
  • Step 1: Understand what sight distance means. It is the distance a driver can see ahead on the road.
  • Step 2: Recognize that vertical alignment refers to the up and down curves of the road, like hills and valleys.
  • Step 3: Realize that if the road goes up or down too steeply, drivers may not see obstacles in time.
  • Step 4: Conclude that good vertical alignment helps maintain clear sight lines, allowing drivers to react safely.
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