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Difficulty: MediumSpeed and Road Conditions

While operating a commercial vehicle in near-freezing weather, a noticeable decrease or absence of water spray thrown from the tires of vehicles traveling ahead indicates that the road surface is freezing and speed should be reduced immediately.

Answer: Answer

Answer

True
Under commercial driving safety standards, when operating in cold weather where temperatures hover near or below the freezing point, a loss of water spray from preceding vehicle tires is a clear physical indicator that surface water has frozen. This change signifies a severe loss of available pavement traction, necessitating an immediate reduction in vehicle speed.

Step-by-Step Solution

1
Analyze the visual observation and environmental conditions
A sudden reduction in tire spray during near-freezing ambient temperatures indicates surface moisture has transitioned from liquid water into ice.
Tires throw water spray into the air when rolling through liquid water, but they do not create spray when traveling over solid ice.
2
Determine the required vehicle speed adjustment for the identified road condition
The driver must immediately reduce vehicle speed to match the significantly reduced traction of an icy road surface.
CDL speed management guidelines dictate adjusting speed immediately upon recognizing signs of surface freezing to prevent skids and loss of control.

Key Concept

Identifying Road Surface Freezing and Traction Loss Indicators
Estimated Time:1m 0s
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Topics

Speed and Road Conditions

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