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Texas Class C Learner License Practice Test
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Passing target: 70% (28/40)
Observation, Speed & SpaceStandalone practice
You drive on a city street when a ball rolls out between two parked cars ahead. For an average driver, about how much time passes from the moment you see the danger until your foot pushes the brake?
Correct answer: About 1.5 seconds
Why
During this perception and reaction time, the car keeps moving at full speed before the brakes do any work. At 40 mph, a car moves about 88 feet in 1.5 seconds. Distraction, fatigue, alcohol and drugs make this time longer, which is one reason to keep a large following gap.
Verified against Texas Driver Handbook · Speed · p. 51
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