Carbon monoxide — Louisiana Permit Test
Carbon monoxide on the Louisiana permit test — 3 rules, each with the reason behind it and a question on it while it is fresh.
The rules
Carbon monoxide has no odor, so you can be affected by it without knowing.
You cannot smell the danger, so you have to watch for how you feel instead.
Because carbon monoxide does not have an odor, you can be affected without knowing it.
Early symptoms of carbon monoxide poisoning include yawning, dizziness and upset stomach; if they occur, get fresh air immediately.
The gas makes you sleepy, so acting at the first signs can keep you from passing out at the wheel.
Early symptoms include: yawning, dizziness and upset stomach.
Carbon monoxide can build up when the engine is running in a closed space such as a garage.
In a closed garage the exhaust gas has nowhere to go and quickly reaches deadly levels.
It may build up when the engine is running in a closed space such as a garage.
On the test
Why is carbon monoxide so dangerous in a car?
It has no odor. You cannot smell the danger, so you have to watch for how you feel instead. Class D & E Driver's Guide, p.119: “Because carbon monoxide does not have an odor, you can be affected without knowing it.”
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.")