Subway and tram.

- Tram and subway areas where they are present, however the metro uses underground city for moving travelers. This is the main difference from the tram, which travels through the city outdoors.

- The subway and tram are two means of public transport which citizens can travel through the town where they are built.

-The subway is an underground commuter rail system located within a city and its metropolitan area. It is characterized as a mass transit in large cities, bringing diverse and surrounding areas, with high capacity and frequency, and separated from other transport systems.

- A tram is also a means of passenger rail and flowing over the surface in urban areas, the streets themselves.

- In some cases the railway tram can travel on public roads and even exclusive grass cover, further integrating the urban landscape.

- The subway construction requires costly since you have to use the bottom to the ground, with the consequent work required. However, it is much more convenient for the city traffic and also for travelers who need not endure traffic jams and possible inclement weather.

- The tram is considered a public transport network and, although with a default route, you must follow the directions of traffic.