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Difficulty: MediumSpeed Control and Following Distance

You are driving along a roadway with a normal posted speed limit of 40 mph40\text{ mph}. As you approach a school zone with active flashing yellow warning lights during morning drop-off hours, rain begins to make the road surface slick. Which of the following actions represents the correct speed control and safety procedure under traffic law?

  1. Reduce your speed to match the posted school zone limit and slow down further if reduced tire traction requires it.Answer
  2. B
    Maintain 40 mph40\text{ mph} until you see children actively walking near or crossing the street.
  3. C
    Continue at 40 mph40\text{ mph} because posted maximum speed limits remain legally permissible regardless of weather conditions.
  4. D
    Decrease your following distance to two seconds to clear the school zone as quickly as possible.

Answer

Drivers must obey active school zone speed reductions and adjust their speed downward for wet road surfaces under the Basic Speed Law.
The correct action is to comply with the lowered school zone limit enforced by the active beacons and reduce speed further as needed to account for wet pavement traction loss under the Basic Speed Law.

Step-by-Step Solution

1
Evaluate active traffic control devices
Recognize that flashing yellow school zone lights require lowering vehicle speed to the designated school zone limit immediately.
School zone speed limits are legally binding whenever warning lights are activated or posted hours are in effect.
2
Apply the Basic Speed Law to road conditions
Assess the wet pavement and reduce speed below the posted maximum if necessary to maintain full vehicle control.
The Basic Speed Law mandates driving at a safe, reasonable speed given weather, traction, and visibility conditions.

Key Concept

Basic Speed Law and School Zone Speed Regulations
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Topics

Speed Control and Following Distance

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