When is it illegal to drive below the speed limit?
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When on a multi-lane highway.
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When impeding the normal flow of traffic.
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During good weather conditions.
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All of the above.
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Explanation
While drivers must reduce speed during hazardous conditions (like bad weather or heavy traffic), it becomes illegal to drive significantly below the posted limit when doing so unnecessarily blocks the normal and reasonable flow of traffic. On multi-lane highways, slower vehicles must use the right lanes to avoid obstructing faster-moving traffic. If another driver wishes to pass, you should safely move right when possible. Remember that speed limits set the maximum under ideal conditions - drivers may be cited for either faster or slower driving that creates hazards.
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