Speed and visibility — Kentucky Permit Test
Speed and visibility on the Kentucky permit test — 5 rules, each with the reason behind it and a question on it while it is fresh.
The rules
In heavy rain, a snowstorm or thick fog a Kentucky driver may not be able to see more than 100 feet ahead, and cannot safely drive faster than 25 mph.
A hundred feet of vision is less than the distance it takes to stop from any higher speed.
In a heavy rain, snowstorm, or a thick fog, you may not be able to see more than 100 feet ahead. When you cannot see any farther than that, you cannot safely drive faster than 25 miles per hour.
A Kentucky driver in heavy rain, snow or fog should also use low beam headlights.
High beams bounce off the rain and fog and come straight back at the driver.
You should also use low beam headlights.
At night a Kentucky driver must be closer to an object to see it than during the day, and should never drive so fast that they cannot stop within the distance they can see with their headlights.
Outdriving the headlights means the first sight of a hazard comes too late to stop for it.
Never drive so fast that you cannot stop within the distance you can see with your headlights,
Trees, bushes, parked cars, signs and buildings at Kentucky intersections can block the view of vehicles coming from the side, so a driver approaches slowly enough to stop.
The car that pulls out suddenly is usually the one that was hidden behind something.
Approach these areas with caution and slowly enough to be able to stop if a vehicle pulls out suddenly.
When a Kentucky driver comes to a hill or curve they adjust speed so they can stop if a stalled car or slow-moving vehicle is in the lane.
The far side of a crest is the one place where a stopped car appears with no warning at all.
Hills and curves – When you come to a hill or curve, adjust your speed so you can stop if a stalled car or slow-moving vehicle is in your lane.
On the test
How fast can a Kentucky driver safely go when they can see no more than 100 feet?
25 mph. A hundred feet of vision is less than the distance it takes to stop from any higher speed. Kentucky Driver Manual, p.50: “In a heavy rain, snowstorm, or a thick fog, you may not be able to see more than 100 feet ahead. When you cannot see any farther than that, you cannot safely drive faster than 25 miles per hour.”
How this works
Most practice tests hand you a bank of questions and leave the manual somewhere else. This one puts them together.
You read one law and the reason behind it, then answer a question on that law while it is still fresh. Get it right and you move on; get it wrong and you have found the gap while it is cheap to fix, not on the morning of the exam.
Learning one rule at a time, and proving it immediately, is what turns a manual you skimmed into something you actually know — and it makes studying feel like getting somewhere rather than like waiting to find out.
What it costs
- One payment, once — not a subscription. Nothing renews and there is nothing to cancel, for an exam you sit one time.
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- Paying opens the rest of the cards, unlimited full-length practice tests, and retests built from exactly the questions you got wrong.
- Every level up to Prepared — 3 tests passed in a row.
- Do the work, fail the real exam, and we refund you.
Where these come from
Every rule here is checked against Kentucky Driver Manual, published by the Kentucky Transportation Cabinet, and against the state code itself. Last checked 2026-09-16.
- src/assets/drivers-manuals/KY.pdf (Kentucky Driver Manual, Kentucky State Police / Kentucky Transportation Cabinet, retrieved 2026-09-14; no edition statement in the document)
- src/assets/drivers-manuals/KY.pages.txt (plain pdftotext over that PDF; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/SOURCES.json (sha256, folio offset 8, folioMarker, nonLawPages, the extraction flag and knowledgeTestBasis, each with its basis)