A few notes:
-NV and WA were authorized for 80 mph and 75 mph, respectively, but no stretches are posted at those speeds yet.
-OR speed limit of 70 mph goes into effect March 1, 2016.
-PA 70 mph speed limit is only on sections of its Turnpike.
-TX 85 mph speed limit is only on SH130.

source: IIHS

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