Big trucks space blind spots — Louisiana Permit Test
Big trucks space blind spots on the Louisiana permit test — 6 rules, each with the reason behind it and a question on it while it is fresh.
The rules
A loaded tractor trailer at 55 mph on a clear, dry road needs at least 290 feet to stop.
A truck needs far more room to stop than a car. If you cut in close, it can't stop before it hits you.
A tractor trailer loaded with freight, safe-rated tire, and properly adjusted brakes traveling at 55 miles per hour on a clear, dry roadway requires a minimum of 290 feet to come to a complete stop.
Do not cut in front of a truck just because you see open space; that space is the truck's cushion for its longer stopping distance.
If you take that gap and then have to stop, the truck has no room left to stop behind you.
Do not cut in front of a truck just because you see open space there.
If you cannot see the truck driver's face in one of the truck's mirrors, the driver cannot see you.
Mirrors work both ways. No face in the mirror means you are in a blind spot.
If you cannot see a truck driver’s face in one of his mirrors, the driver cannot see you and probably does not know you are there.
If you are following a truck and cannot see its side mirrors, you are too close; back off.
Right behind a truck you are hidden from its driver and can't see the road ahead.
If you are following a truck and cannot see the truck’s side mirrors, you are driving too close.
Avoid the right lane on hills and near truck weigh stations, where large vehicles re-enter faster traffic.
Trucks pull back onto the road slowly from weigh stations, and they are slow on hills.
Avoid driving in the right lane, if possible, when traveling up or down hills, as well as near truck weigh stations, where large vehicles will be attempting to re-enter faster-moving traffic.
On windy days, don't drive alongside a truck any longer than needed; stay to the outer edge of your lane and hold the wheel with both hands.
Wind swirling off a truck can push your car sideways or even spin it out.
On windy days, never drive alongside a truck for longer than you need to pass it.
On the test
A loaded tractor trailer going 55 mph on a dry road needs at least how far to stop?
290 feet. A truck needs far more room to stop than a car. If you cut in close, it can't stop before it hits you. Class D & E Driver's Guide, p.83: “A tractor trailer loaded with freight, safe-rated tire, and properly adjusted brakes traveling at 55 miles per hour on a clear, dry roadway requires a minimum of 290 feet to come to a complete stop.”
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.")