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Geometric design of highways includes the design of the visible elements of the facility. The design must be consistent with the intended functional classification of the highway, and fit the characteristics of the users, i.e., the drivers and the vehicles that the drivers are operating. The quality and consistency of the highway design will have a long-term effect on the safety and efficiency of the facility. Important elements of geometric design discussed in this module include sight distance criteria, horizontal and vertical alignments, cross sectional features, intersection and channelization design, and interchange configurations.

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