A change in gradient is:
Basic concepts
Explanation
A **crest** is a place on the road where two sections with different **gradients** intersect. This means that the road goes up or down, creating a slope.
- The **gradient** refers to the inclination of the road. A crest occurs when this inclination changes, that is, when a section of the road goes from ascending to descending or vice versa.
- At a crest, visibility may be reduced, especially if the gradient is steep, which can make it difficult to see vehicles ahead or those coming in the opposite direction.
Therefore, a crest is not simply a section where the full length of the road is not visible (as it might be in a curve), nor is it a place where there is a change of direction. Specifically, it is a change in the road's gradient.
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