Louisiana driver fitness practice questions
2 questions below test Louisiana’s own driver fitness law, each with the statute or Louisiana Office of Motor Vehicles handbook section it came from, plus 10 more on driver fitness rules that apply in every state.
The Louisiana permit knowledge test has 40 questions in total and needs 32 correct (80%) to pass.
Louisiana law
2 questions on Louisiana’s own driver fitness rules
These differ from the rules that hold nationally — they are the ones that catch out drivers who studied another state’s handbook.
1. Louisiana’s underage operating-while-impaired offense applies when a person under 21 operates a vehicle with a BAC of:
- A0.05% or more
- 0.02% or more
- C0.10% or more
- D0.08% or more only
Answer: 0.02% or more. Louisiana R.S. 14:98.6 defines underage operating a vehicle while impaired as operating with a blood alcohol concentration of 0.02 percent or more by weight when the operator is under the age of twenty-one.
Source: Louisiana Revised Statutes — R.S. 14:98.6
2. For Louisiana drivers 21 or older, DWI based on alcohol concentration is generally keyed to a BAC of:
- A0.05% or more
- 0.08% or more
- C0.10% or more
- D0.02% or more
Answer: 0.08% or more. The Louisiana Highway Safety Commission summarizes that DWI for drivers over the age of 21 is .08 BAC under R.S. 14:98 (while under-21 drivers are subject to the 0.02 threshold in R.S. 14:98.6).
Source: Louisiana Highway Safety Commission — Traffic Safety Laws — BAC .08 (R.S. 14:98)
Sources for the Louisiana items above
Applies everywhere
Driver fitness rules that hold in every state
A sample of the national driver fitness bank. All 10 are in the practice run, combined with the Louisiana items above for 12 questions in total.
1. How does alcohol affect driving ability?
- It can impair judgment, vision, coordination, and reaction time
- BIt affects only new drivers
- CCoffee immediately cancels its effects
- DIt improves reaction time
Answer: It can impair judgment, vision, coordination, and reaction time. Alcohol can impair several abilities needed for safe driving, and only time lowers the amount in the body.
Source: Official state driver handbook — Driver fitness — alcohol and drugs
2. What is the only reliable remedy for driver fatigue?
- AOpening the windows
- BTurning up the radio
- CCoffee or an energy drink
- Sleep
Answer: Sleep. Caffeine, cold air, and music mask drowsiness briefly. Only real sleep restores alertness, so stop somewhere safe and rest.
Source: Official state driver handbook — Driver fitness — fatigue
3. Prescription and over-the-counter medicines can affect driving by:
- Causing drowsiness, blurred vision, or slowed reactions
- BHaving no effect if legally prescribed
- COnly affecting drivers over 65
- DImproving concentration
Answer: Causing drowsiness, blurred vision, or slowed reactions. Legality does not mean safety. Check labels and pharmacist advice for warnings about operating machinery.
Source: Official state driver handbook — Driver fitness — medication
More Louisiana topics
Other Louisiana rules with their own questions
Driver fitness elsewhere
Driver fitness rules in other states
Driver fitness law is set state by state — compare how another state handles it.
Confirm current Louisiana rules
Statutes and handbooks change. Louisiana Office of Motor Vehicles is authoritative for Louisiana driver fitness rules and for the permit test itself.
Visit Louisiana Office of Motor VehiclesCommon questions
About Louisiana driver fitness rules and this practice set.