Which design element is crucial for ensuring adequate sight distance on highways

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

Which design element is crucial for ensuring adequate 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: Learn about vertical alignment. This refers to the up and down curves of the road, like hills and valleys.
Step 3: Realize that good vertical alignment helps drivers see far enough ahead to react to any obstacles or changes in the road.
Step 4: Conclude that if the vertical alignment is not designed well, it can block the driver's view, making it hard to see what's coming.

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