Traffic crossword by A

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Across
  1. 3. many cars crash into each other
  2. 5. a tunnel which you have to go under
  3. 7. two cars hit each other
  4. 8. when you are exceeding the speedlimit
Down
  1. 1. the fumes that go in the air from driving
  2. 2. when an animal gets hit by a car and dies
  3. 4. the stuff you have to put in your car for it to run
  4. 6. the thing that pops out when you crash and softens the impact