Louisiana Permit Test Study Guide (2026)

Cover every topic on the Louisiana DMV permit test, ranked by how often they show up on the real exam.

The Louisiana Class E Driver's Guide from the OMV covers everything on the knowledge test. It explains traffic laws, road signs, right-of-way rules, parking, and safe driving habits. Read it section by section and re-read any chapter that confuses you. Practice tests help you build speed and confidence.

Louisiana Speed Limits

Speed limits are one of the most-tested topics on the LA permit exam, and the questions usually test Louisiana's statutory default limits -- what the speed is when no sign is posted. Under La. R.S. 32:61, Louisiana's default is 55 mph, rising to 65 mph on multi-lane divided highways and 70 mph on interstates or other controlled-access highways. Louisiana doesn't set fixed statewide defaults for business, residential, or school zones -- DOTD sets those locally after an engineering study. Always obey the basic-speed law: never drive faster than is safe for current conditions.

Alcohol & BAC Limits

Expect at least one alcohol question on the Louisiana permit test. Memorize the three BAC thresholds: 0.08% is the legal limit for drivers age 21 and older, 0.04% is the limit for anyone driving with a commercial driver license (CDL), and Louisiana's underage DWI threshold for drivers under 21 is 0.02% (La. R.S. 14:98.6) -- a separate, lesser charge from the adult DWI statute. A first offense brings 10 days to 3 months in jail, a $100-250 fine, and a 180-day license suspension. A BAC of 0.08% or higher brings full adult DWI charges instead.

Right-of-Way Rules

Right-of-way is the single most-missed topic across every state's permit test. The rules are simple once you memorize them. At a 4-way stop, the first vehicle to fully stop goes first; if two arrive together, the driver on the right has the right of way. At an uncontrolled intersection, yield to any vehicle already in the intersection and to the driver on your right. At roundabouts, yield to traffic already circulating and enter only when there is a safe gap. Always yield to pedestrians in any crosswalk, marked or unmarked, and to emergency vehicles with lights and sirens — pull right and stop. When turning left across oncoming traffic, you must yield to oncoming vehicles. Yield does not give you the right of way; it requires you to give it up.

Following Distance & Safety

Louisiana's driver's guide recommends a minimum 3-to-4-second following distance: pick a fixed point on the road, wait for the vehicle ahead of you to pass it, then count one-thousand-one, one-thousand-two, one-thousand-three. Measuring in seconds rather than car lengths works at any speed -- the distance you cover in 3 to 4 seconds naturally grows as your speed increases.

Road Sign Colors & Shapes

Road signs on the LA permit test follow the federal Manual on Uniform Traffic Control Devices, so shapes and colors are consistent across the country. Memorize the shapes first: octagon always means stop, downward triangle means yield, diamond means warning, pentagon marks a school zone, round warns of a railroad crossing, and horizontal rectangle is a guide sign. Then learn the colors: red is stop or prohibition, yellow is general warning, orange is construction, green is directions and exits, blue is driver services, brown is recreation, and fluorescent yellow-green is for schools and pedestrians. Practice identifying signs by shape and color alone — see the full visual cheat sheet on our Louisiana road-signs page.

Key Louisiana Numbers to Memorize

If you only remember a handful of facts going into the test, make it these. Every one of them maps to questions that have appeared on the real LA exam.

Parking Rules

Parking questions on the Louisiana permit test cover two patterns everywhere. For parallel parking, your wheels should be no more than 12 inches from the curb. For hill parking, the kerb rule decides which way your front wheels point: facing downhill (with or without a curb), turn the wheels toward the curb; facing uphill with a curb, turn the wheels away from the curb so they rest against it; facing uphill with no curb, turn the wheels toward the edge of the road. Always set the parking brake and leave the car in park (or in low gear with a manual).

Louisiana's no-parking zones (La. R.S. 32:143) you must memorize: within 15 feet of a fire hydrant, within 20 feet of a crosswalk at an intersection (never on the crosswalk itself), within 20 feet on the approach to a flashing beacon, stop sign, or traffic-control signal -- a shorter distance than most states' 30 feet -- and within 50 feet of the nearest rail at a railroad crossing.

GDL Restrictions (LA)

Louisiana's Learner's License (TIPIC): apply at 15, hold it at least 180 days, and log 50 hours of supervised driving, including 15 at night -- more night hours than most states require. At 16, move to the Intermediate License: its night curfew runs 11 p.m. to 5 a.m. (exceptions for a licensed parent, guardian, adult 21 or older, or sibling 18 or older riding along). Separately, between 6 p.m. and 5 a.m., you may carry only one passenger under 21 outside your immediate family unless someone 21 or older is with you. Expect 1-3 GDL questions on the LA exam.

DUI & Drug Laws

DUI questions go beyond the BAC limits in Section 2. Three concepts you must know: implied consent means refusing a chemical test triggers automatic license suspension on top of any DUI charge. Prescription and over-the-counter drugs can also impair driving — antihistamines, sleep aids, painkillers, and some cold medicines list "do not operate heavy machinery" warnings, and driving impaired by them is a DUI even if you have a valid prescription. Marijuana — even where state-legal — is treated like alcohol for driving: any detectable impairment can result in a DUI, and edibles can take 1–3 hours to peak. The only safe BAC and the only safe THC level for driving is zero. There is no quick way to sober up; only time will lower your BAC.

Now Test What You've Studied

Five questions pulled at random from our Louisiana question bank — a mix of road signs, traffic laws, and right-of-way. Answer to see the correct choice and a short explanation. For a full timed exam, take the free practice test.

Louisiana Study Guide FAQ