What determines whether you should adjust your driving speed from the posted speed limit?
Driving speed should be adjusted according to road, weather, and traffic conditions rather than solely obeying the posted speed limit. This approach is necessary for safe driving because speed limits assume ideal conditions which often don't take into account real-time challenges like poor visibility, congestion, or slippery surfaces.
See the exact questions that will be on the 2026 Michigan DMV exam.
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