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New Jersey Basic Auto Learner Permit Practice Test
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Passing target: 80% (40/50)
Observation, Speed & SpaceStandalone practice
Two cars travel at 40 mph on the same wet road. Driver A is alert and has good tires. Driver B is drowsy and has badly worn tires. What is true about their stopping distances?
Correct answer: B needs more distance, because both reaction time and tire condition add to it.
Why
Total stopping distance is the distance you travel while reacting plus the distance the brakes need to stop the car. The manual's chart shows that at 40 mph a typical driver needs about 44 feet to react and 123 feet to brake, about 167 feet in all, before any extra for a wet road or worn tires. Leave more space ahead whenever conditions or your alertness are less than ideal.
Verified against New Jersey Driver Manual · Stopping Distances · p. 54, 55
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