Iowa · Defensive Driving
Signs of drowsy driving include:
- Increased focus
- Faster reaction times
- Yawning repeatedly, trouble keeping your head up, and drifting from your lane
- Improved vision
Correct answer
Yawning repeatedly, trouble keeping your head up, and drifting from your lane
Why this is correct
Correct answer: Yawning repeatedly, trouble keeping your head up, and drifting from your lane. Source: Iowa Driver's Manual, page 37. Topic: Distracted Driving.
Iowa Driver Handbook, p. 37