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Difficulty: MediumFactors Affecting Thinking Distance

Taking over-the-counter medication that causes drowsiness increases a vehicle's thinking distance when responding to a hazard.

Answer: Answer

Answer

True. Drowsiness caused by medication slows driver reaction time, which directly increases the distance travelled before braking begins.
Thinking distance is the distance covered while the driver identifies a hazard and physically applies the brakes. Drowsiness induced by medication lengthens reaction time, causing the vehicle to cover more ground before deceleration begins.

Step-by-Step Solution

1
Identify the components that determine thinking distance.
Thinking distance is the product of vehicle speed and driver reaction time.
It measures how far the vehicle moves between perceiving a hazard and initiating physical braking.
2
Determine how drowsy medication affects driver reaction time.
Sedating substances slow cognitive perception and motor response.
Drowsiness impairs alertness, delaying the driver's ability to spot a danger and move their foot to the brake pedal.
3
Evaluate the resulting impact on thinking distance.
A longer reaction time increases thinking distance proportionally.
Since the vehicle continues moving at speed during the prolonged reaction phase, thinking distance is extended.

Key Concept

Thinking distance is determined by vehicle speed and driver reaction time; any factor that impairs alertness or slows reaction time (such as drowsy medication) increases thinking distance.
Estimated Time:45s
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Factors Affecting Thinking Distance

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