CROSS-HATCHING
CROSS-HATCHED (diagonal) lines mark pavement areas where driving is discouraged, such as gore areas, painted medians, obstructions in the roadway, and other "safety zones." Cross-hatching markings are YELLOW if they are used in a pavement area that separates traffic flowing in opposite directions or in the left side shoulder of a one-way roadway. Cross-hatching markings are WHITE if they are used in a pavement area that separates traffic flowing in the same direction or in the right side shoulder.
[MUTCD Sections 3B.05 and 3B.10]
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