Driving fatigue

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Across
  1. 4. Briefly falling asleep at the wheel
  2. 6. A tired look, with lids that feel like weights.
  3. 7. A deep intake of breath with the mouth opened wide
  4. 8. Worn out from long hours on the road.
Down
  1. 1. Mentally clouded from lack of rest
  2. 2. A feeling of lack of stimulation.
  3. 3. Split‑second sleep episode while driving
  4. 5. Feeling drowsy, tired, and in need of rest