The maximum posted speed limit should be driven only:
- During the night.
- During the day.
- Under ideal conditions. ✓
Answer: C. Under ideal conditions.
The maximum posted speed limit should be driven only under ideal conditions.
Why this is the answer
The manual says you must obey the speed limit, but it also says it often makes sense to stay below the posted number. On a slippery or fogged-in expressway, the legal limit might be 55 or even 65 mph, yet the safe speed would be much lower. Driving at a speed that is not reasonable for the conditions can get you ticketed even when you are under the limit. That is why the top posted speed is meant for ideal conditions only, when weather, traffic, and road surface are all good.
Why the other answers are wrong
- A. During the night. — Nothing in the manual ties the maximum posted limit to nighttime driving; darkness is just one of the conditions that may call for a lower speed.
- B. During the day. — Daytime driving is not the rule either, since daylight alone does not mean the road, weather, and traffic are ideal.
Remember it
Think of the posted maximum as a ceiling for a perfect day, not a target to reach.
Official handbook: New York State Driver's Manual (MV-21), Chapter 8: Defensive Driving – Speed