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Difficulty: HardRegulatory Signs

A regulatory sign indicating 'MINIMUM SPEED 40' legally requires drivers to maintain a speed of at least 40 mph at all times, even when adverse conditions such as severe fog or heavy rain make traveling at that speed unsafe.

Answer: Answer

Answer

False. Drivers must reduce their speed below posted minimum speed limits when hazardous weather or poor visibility renders the posted minimum speed unsafe.
The statement is false because while regulatory minimum speed signs establish lower boundaries for traffic flow, environmental hazards like severe fog or heavy rain trigger the Basic Speed Law, legally requiring drivers to slow down below the posted minimum to maintain safe vehicle control.

Step-by-Step Solution

1
Identify the regulatory function of the sign
A 'MINIMUM SPEED' sign is a black-and-white regulatory sign designed to keep traffic moving safely under normal conditions.
Regulatory signs inform drivers of specific statutory rules and speed boundaries.
2
Evaluate the impact of adverse environmental conditions
Severe fog and heavy rain reduce traction and visibility, creating an immediate driving hazard.
Operating at normal highway speeds during hazardous weather increases the likelihood of collision.
3
Apply the overriding Basic Speed Law rule
The Basic Speed Law dictates that no person shall drive at a speed greater than is reasonable or prudent given existing visibility, weather, and traffic conditions.
Safety laws supersede posted minimum speed regulations when maintaining the minimum speed becomes dangerous.

Key Concept

Interaction between Regulatory Minimum Speed Signs and the Basic Speed Law
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Topics

Regulatory Signs

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