Impaired driver clues — Nevada Permit Test
Impaired driver clues on the Nevada permit test — 3 rules, each with the reason behind it and a question on it while it is fresh.
The rules
Using two lanes or straddling the center line is a clue that a driver may be under the influence of alcohol or drugs.
A car riding the center line can swing into your lane with no warning, so give it room.
Using two lanes, straddling the center line
Driving at night with headlights off is a clue that a driver may be under the influence of alcohol or drugs.
A dark car at night is hard to see, and the driver who forgot the lights may not see you either.
Driving at night with headlights off
Erratic braking, such as riding the brakes or braking for no reason, is a clue that a driver may be under the influence.
Following a driver who brakes for nothing can end with your car in their trunk.
Erratic braking (riding the brakes, using brakes for no reason or braking in an uneven, jerky way)
On the test
Which of these is a clue that another driver may be under the influence?
Straddling the center line across two lanes. A car riding the center line can swing into your lane with no warning, so give it room. Nevada Driver Handbook, p.81: “Using two lanes, straddling the center line”
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.
- Free to start: a 10-question test and the first section of cards. No sign-up and no account.
- 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 Nevada Driver Handbook, published by the Nevada Department of Motor Vehicles, and against the state code itself. Last checked 2026-10-04.
- src/assets/drivers-manuals/NV.pdf (Nevada Driver Handbook, DMV 700, March 2024, Nevada Department of Motor Vehicles, retrieved 2026-09-14 and re-checked 2026-10-04; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/NV.pages.txt (plain pdftotext, the fixture every citation here was cut from and verified against; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/NV-exam.html (Nevada DMV, Written Knowledge Test page, https://dmv.nv.gov/wtestteens.htm, read 2026-10-04; states both exam figures; sha256 pinned under examSource)
- https://dmv.nv.gov/dlhandbook.htm (read 2026-10-04; links the handbook)