Across
- 5. gases ejected from an engine as waste products
- 8. not harmful to the environment, or trying to help the environment
- 10. each of the two sides of a divided highway or expressway, each of which usually have two or more lanes
- 11. an instance of one moving object or person striking violently against another
- 14. a light two-wheeled hooded vehicle drawn by one or more people, used chiefly in Asian countries
- 15. become smaller or less in size, amount, or degree.
- 16. a point where two or more things are joined
- 18. an unfortunate incident that happens unexpectedly and unintentionally, typically resulting in damage or injury
- 20. an expressway
- 21. the occurrence and development of events by chance in a happy or beneficial way
Down
- 1. a road junction at which traffic moves in one direction around a central island to reach one of the roads converging on it; a traffic circle
- 2. a person walking along a road or in a developed area.
- 3. a vehicle specially equipped for taking sick or injured people to and from the hospital, especially in emergencies.
- 4. dead end
- 6. excessively talkative, especially on trivial matters
- 7. an alternative route for use by traffic when the usual road is temporarily closed; a detour.
- 9. vehicles moving on a road or public highway
- 12. a harsh discordant mixture of sounds
- 13. a wide street in a town or city, typically one lined with trees
- 17. the basic physical and organizational structures and facilities (e.g. buildings, roads, power supplies) needed for the operation of a society or enterprise
- 19. the state of being congested.