Question

Difficulty: MediumSpeed Limits and Speed Regulation

While driving along a busy commercial boulevard with a posted speed limit of 35 mph35\text{ mph}, a sudden heavy downpour creates standing water and severely limits visibility. Traffic begins slowing down, but a motorist continues driving at 35 mph35\text{ mph}, maintaining that operating at the posted limit is always legal. Which statement accurately describes the legality of this driver's speed?

  1. The driver is violating the Basic Speed Law because driving at the posted speed limit is illegal when weather or road conditions make that speed unsafe.Answer
  2. B
    The driver is operating legally because posted maximum speed limits establish a guaranteed legal right to drive at that speed at all times.
  3. C
    The driver is only required to reduce speed if a temporary electronic sign or law enforcement officer explicitly lowers the posted limit.
  4. D
    The driver is legally required to reduce their speed by a mandatory fixed rate of 15 mph15\text{ mph} whenever windshield wipers are in continuous use.

Answer

The driver is violating the Basic Speed Law because driving at the posted speed limit is illegal when weather or road conditions make that speed unsafe.
The Basic Speed Law states that a driver must never operate a vehicle at a speed faster than is safe for existing conditions. Regardless of posted speed limit signs, adverse weather such as torrential rain and standing water demands reduced speed to maintain traction and safe stopping distances.

Step-by-Step Solution

1
Identify the environmental conditions and driver actions in the scenario.
The driver maintains the maximum posted limit of 35 mph35\text{ mph} despite heavy rain, standing water, and reduced visibility.
Speed regulation analysis requires evaluating both posted limits and prevailing road hazards.
2
Apply the legal standard defined by the Basic Speed Law.
The Basic Speed Law mandates driving at a safe, reasonable speed for current conditions, regardless of posted maximum speed signs.
Posted speed limits apply under ideal conditions; driving at the posted limit on slippery, low-visibility roads creates hazards such as hydroplaning.

Key Concept

Basic Speed Law versus Posted Maximum Speed Limits
Estimated Time:1m 0s
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