Iowa permit test: night, weather & hazards
Headlights, rain, fog, ice, skids, glare and other hazards. 7 questions.
When does Iowa law require you to use both headlights?
Keyboard: press 1–4 or A–D to answer, Enter for the next question, S to save, R to read aloud, P to pause reading, L to listen and answer.
Sample night, weather & hazards questions
When does Iowa law require you to use both headlights?
- A Only between midnight and 5 a.m.
- B From sunset to sunrise, or when visibility is 1,000 feet or less
- C From sunset to sunrise, or when visibility is 500 feet or less
- D Only when it is raining
Show answer
C. From sunset to sunrise, or when visibility is 500 feet or less
Iowa requires both headlights from sunset to sunrise and whenever you cannot see 500 feet ahead, as in fog, heavy rain or snow. A good rule of thumb: wipers on, headlights on.
Which lights should you use when driving in fog?
- A High beams, to see farther ahead
- B Low beams or fog lights
- C Parking lights only
- D Hazard lights only
Show answer
B. Low beams or fog lights
In fog, use low beams or fog lights if you have them. High beams reflect off the fog and reduce your visibility even more.
How much moving water can sweep away a vehicle, including SUVs and pickups?
- A At least 2 feet
- B As little as 6 inches
- C At least 3 feet
- D About 1 inch
Show answer
B. As little as 6 inches
As little as 6 inches of moving water may sweep away a vehicle. Never drive through a flooded road or bridge; turn around and find another route.
Why may bridges and overpasses be icy when the rest of the road is not?
- A They sit higher, so more snow falls on them
- B Snowplows skip them
- C Cold air circulates above and below them
- D Salt does not work on concrete
Show answer
C. Cold air circulates above and below them
Bridges and overpasses freeze first because cold air moves both above and below the road surface. Black ice is common there and hard to see, so slow down before you reach them.