Night headlight use — Louisiana Permit Test
Night headlight use on the Louisiana permit test — 4 rules, each with the reason behind it and a question on it while it is fresh.
The rules
Use your high beams whenever there are no oncoming vehicles.
Your headlights limit how far you see at night, so use the brighter beams when no one will be blinded.
Use your high beams whenever there are no oncoming vehicles.
High beams let you see twice as far as low beams.
Seeing farther gives you more time to spot a hazard and stop at night.
High beams let you see twice as far as low beams.
Do not keep your high beams on to get back at a driver who will not dim theirs.
If both drivers keep bright lights on, both may be blinded at the same moment and crash.
Do not try to “get back” at the other driver by keeping your bright lights on.
Use your low beams when following another vehicle, in heavy traffic, in fog, or when it is snowing or raining hard.
High beams glare off fog, snow and rain and into the mirrors of the car ahead.
Use your low beams when following another vehicle, in heavy traffic, in fog, or when it is snowing or raining hard.
On the test
At night, when should you use your high beams?
Whenever no vehicles are oncoming. Your headlights limit how far you see at night, so use the brighter beams when no one will be blinded. Class D & E Driver's Guide, p.107: “Use your high beams whenever there are no oncoming vehicles.”
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 Class D & E Driver's Guide, published by the Louisiana Department of Public Safety, and against the state code itself. Last checked 2026-10-04.
- src/assets/drivers-manuals/LA.pdf (Class D & E Driver's Guide, DPSMV2052 (R08/25), Louisiana Office of Motor Vehicles, retrieved 2026-09-14; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/LA.pages.txt (the plain pdftotext fixture every citation here was cut from and verified against; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/LA-exam.html (the OMV's Permits page, https://expresslane.la.gov/omv/drivers/personal-driver-s-licenses/permits/, archived 2026-10-04; the 40-question count)
- https://expresslane.la.gov/omv/resources/driver-manuals/
- https://expresslane.la.gov/omv/drivers/personal-driver-s-licenses/new-licenses/ (read 2026-10-04; "An 80% is the minimum passing score for the knowledge test.")