Can you sleep at a Wyoming rest stop?

We’re taking a road trip across the country and just curious if anyone knows we’re allowed to nap at a rest stop or Walmart in case we get too tired as my friend can fall asleep at any given moment during anytime anywhere. I saw on WYdot you were allowed to but unsure how old it was maybe could’ve been recent but... show more We’re taking a road trip across the country and just curious if anyone knows we’re allowed to nap at a rest stop or Walmart in case we get too tired as my friend can fall asleep at any given moment during anytime anywhere. I saw on WYdot you were allowed to but unsure how old it was maybe could’ve been recent but unsure.
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