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Difficulty: MediumSpeed Limits and Speed Regulation

Driving at a speed below a highway's posted minimum speed limit is legally permissible when adverse weather or traffic congestion renders that minimum speed unsafe.

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Answer

True. The Basic Speed Law requires drivers to operate at a speed that is reasonable and prudent for existing conditions, which legally permits and requires driving below posted minimum speed limits when hazardous weather or traffic congestion makes the minimum speed unsafe.
The statement is true because the Basic Speed Law requires drivers to adjust their speed to what is reasonable and prudent for current conditions. Severe weather or heavy traffic makes maintaining the posted minimum speed dangerous, legally justifying and requiring lower speeds.

Step-by-Step Solution

1
Analyze the purpose of posted minimum speed limits under standard traffic regulations.
Posted minimum speed limits are established to prevent impeding traffic and maintain smooth flow under normal, clear driving conditions.
Minimum limits keep traffic moving predictably when road and environmental conditions are clear.
2
Apply the Basic Speed Law to adverse environmental or traffic scenarios.
The Basic Speed Law mandates that driving safety supersedes posted numerical limits, including minimum speed signs.
When extreme rain, fog, ice, or traffic congestion makes travelling at the posted minimum speed unsafe, drivers must reduce their speed accordingly.

Key Concept

Basic Speed Law versus Posted Minimum Speed Limits
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Topics

Speed Limits and Speed Regulation

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