Being awake for 24 hours in a row impairs your driving about as much as what blood alcohol level?
-
A.
.15 percent
-
B.
.05 percent
-
C.
.10 percent Correct
-
D.
.08 percent
The answer is ".10 percent"
The manual equates 24 straight hours awake with driving at a .10 blood alcohol level, above the legal DUI limit for most drivers. Substituting the familiar .08 DUI threshold for the manual's sleep-specific figure is what steers drivers to D.
The traps in the wrong answers
A. .15 percent
The manual does not use a figure this high in its sleep comparison. This answer overshoots by mixing in the higher tier used in DUI penalty tables.
B. .05 percent
This is the manual's number for 18 hours awake, not 24. This answer reads across the wrong row in the two-figure sleep comparison.
D. .08 percent
This is the standard DUI limit, not the 24-hour sleep comparison. This answer substitutes the well-known .08 DUI threshold for the manual's sleep-specific figure.
This question tests your knowledge of Distracted Driving in Pennsylvania. Source: Pennsylvania Driver Manual, "Lack of Sleep," p.32..
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