Which mental ability does the driver’s manual specifically say is reduced by even the smallest amount of alcohol?
Correct answer: B – Good judgment
Even the smallest amount of alcohol can reduce concentration, perception, judgment, and memory. As more alcohol enters the bloodstream, reactions slow and the ability to control a vehicle declines. A driver may also become overly confident while driving ability is getting worse.
Source: Pennsylvania Driver’s Manual — Ch. 3, “Alcohol and Driving”



