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4.0 Geometric and Safety Design

4.6 Cross Slopes

The cross slope is the percent of elevation change along the cross section of highway pavement. Cross slopes are common on roadways, and necessary to provide adequate drainage in the vicinity of toll plazas. However, excessive rollover must be avoided. Rollover is the change in slope between two adjacent road pavements. This could occur between two adjacent travel lanes, or the travelway and shoulder.

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