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Iowa: Observation, space and highway decisions mix

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Question 1 of 3
  1. 1. 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?
  2. 2. Traffic and road conditions are normal, and your exit has a separate deceleration lane. Where should you reduce speed for the exit ramp?
  3. 3. A severely sleep-deprived driver drinks an energy drink and feels more alert. Does that establish that a long drive is safe?
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  1. 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. ↗

  2. Traffic and road conditions are normal, and your exit has a separate deceleration lane. Where should you reduce speed for the exit ramp?

    Correct answer: Once fully in the deceleration lane.

    Use the dedicated lane to slow to an appropriate ramp speed after leaving the through lane. This question assumes normal conditions; respond to hazards or stopped traffic wherever they occur.

    Source: Louisiana Class D & E Driver's Guide linked by OMV (cover R08/25; internal revision markers vary); Exiting; printed page 102, physical PDF page 107; reviewed September 22, 2026. ↗

  3. 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. ↗

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Question reference: ia-car-expanded-la-car-highway-003

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Iowa: Observation, space and highway decisions mix

3 questions on observation, space and highway decisions. Start a short set, read each explanation and revisit your saved mistakes.

3 questions, without a timer. This is a study mix, not an official examination.