Divided Highway

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Divided Highway A  divided highway has one baseline Scribble201 that runs along the centerline of the median. This assumes that the horizontal and vertical alignments of both the primary and opposing lanes are dependent. If they are independent alignments, define each alignment as a One-Way Highway. Four types of encroachments are possible: (1) primary encroachments left, (2)  primary encroachments right, (3) opposing encroachments left and (4) opposing encroachments right but in the case of divided highways the left encroachments enter the median.

