Correct answer
0.75 seconds.
0.75 seconds as an indicative value. It is the time from perceiving danger to beginning a response, such as pressing the brake. It varies with attention, fatigue, alcohol, other factors and the situation. It is not a constant or the average of test options; the vehicle continues travelling during that time.
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0.75 seconds.
one and a half seconds.
0.40 seconds.
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