The real Idaho knowledge test is the DMV exam used for a learner permit. This page contains one fixed 20 question slice of the full free 180 question bank, with an explanation after each answer.
Sample question from test 1
speed
Under Idaho's basic rule, which driving behavior can violate the law even when the vehicle is below the posted limit?
- Driving slowly enough to impede the safe flow of traffic
- Driving 5 mph below the limit on an empty road
- Driving at the posted limit during clear weather
- Driving below the limit while leaving extra space
Answer: Driving slowly enough to impede the safe flow of traffic. Idaho treats speed as a safety judgment, not merely a comparison with a sign. A driver can violate the basic rule by moving so slowly that existing traffic cannot flow safely, even though the speedometer is below the limit. The tempting second choice changes the rule into a five mile per hour threshold that the handbook never creates. Watch the traffic behind you, the surface, visibility, intersections, and other hazards, then choose a speed that remains reasonable and prudent for the whole situation.