1. Tram network that operates below the ground

2. Raised area for boarding and alighting from trams

3. Visible network of wires supplying power to trams

4. Switching from one tram to another

5. Flow of vehicles on tram routes

6. Mechanical system used to slow or stop trams

7. Single trip made by a tram

8. Regular operation of trams

9. Device used to power trams from overhead wires

10. Organized network of trams

11. Box where passengers deposit their tram fare

12. Proof of payment to ride trams

13. Price paid by passengers to ride trams

14. Schedule of tram departures and arrivals

15. Circular components that help trams move

16. Places where trams pick up and drop off passengers

17. Diagram showing tram routes and stops

18. Places for passengers to sit on trams

19. Designated path followed by trams

19. Metal track on which trams run