A car approaching from your left has its right-turn signal on. You are waiting to enter its road. What is safest?
Correct answer: Wait until its movement confirms the turn and your path is clear.
An indicator can be left on or activated early. Confirm the vehicle is actually turning before relying on that opening.
Source: Iowa Driver's Manual, MM1170 07/23/2026; printed page 50, physical PDF page 50; Intersections. Readable text only; no diagram interpretation used. ↗
A driver is following too closely. What is the safest response when an opportunity develops?
Correct answer: Allow the driver to pass safely and keep your own actions predictable.
Avoid escalating a tailgating conflict. Let the driver go by safely rather than brake-checking or speeding.
Source: Iowa Driver's Manual, MM1170 07/23/2026; printed page 48, physical PDF page 48; Tailgaters. Readable text only; no diagram interpretation used. ↗
A driver begins moving into your occupied lane without noticing you. What is an appropriate use of your horn?
Correct answer: Give a warning to help prevent the immediate conflict.
The horn is a warning device. Use it to alert someone to danger, not to express anger or replace a safe evasive response.
Source: Iowa Driver's Manual, MM1170 07/23/2026; printed page 49, physical PDF page 49; Communicating with other drivers. Readable text only; no diagram interpretation used. ↗
You are already on an interstate and notice a car approaching the end of an entrance ramp. A lane change away from it is safe and permitted. Which action can help traffic merge smoothly?
Correct answer: Signal and move over safely to make room.
The guide recommends making room for entering vehicles when a lane change is safe. Check surrounding traffic first; cooperation does not justify an abrupt move or stopping a through lane.
Source: Louisiana Class D & E Driver's Guide linked by OMV (cover R08/25; internal revision markers vary); Right-hand lane; Keeping a space cushion; printed page 101, physical PDF page 106; reviewed September 22, 2026. ↗
A severely sleep-deprived driver drinks an energy drink and feels more alert. Does that establish that a long drive is safe?
Correct answer: No; brief microsleeps can still occur despite feeling more alert.
NHTSA warns that coffee or energy drinks alone may not be enough. A seriously sleep-deprived driver can still have microsleeps; a temporary alert feeling does not replace adequate sleep.
Source: NHTSA; Tips to Drive Alert: Short-Term Interventions, item 1; official safety guidance read September 22, 2026. ↗
