Speed, distance, and safety margins
Speed questions are often visibility questions
Safe speed depends on what you can see and stop within — not just the posted limit.
What to watch for
The question links speed to visibility, bends, weather, night, or road conditions.
The rule
The rule explains exactly how to answer any question of this type — and why the obvious wrong answer fails.
See the rule →Common trap
Don't just use the speed limit as the answer — look at what the conditions allow.