When are you not allowed to pass another vehicle on a highway?
You are not allowed to pass another vehicle on a highway when you are approaching the top of a hill or a curve where you cannot see oncoming traffic. This restriction is crucial for safety as it prevents head-on collisions due to inadequate visibility of oncoming vehicles beyond the crest or bend in the road.
See the exact questions that will be on the 2026 Oklahoma DMV exam.
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