They are costing an incredible amount of money, roughly 600 million pounds, and the road works mean that buses can't get into Princes street, which is especially annoying as the completion of the trams keeps getting postponed.
one of the advantages are they are eco friendly
You use trams to save you from having to drive around to get places. There are many advantages of using a tram.
Bus , train, plane, car and soon trams! practacly anything except horse and carrage!
There are no working trams in Scotland. However, the longest train journey is from Edinburgh to Inverness (via Stirling)
The road traffic laws are generally the same. Edinburgh has trams and Reading doesn't.
A tram can be a monorail without wheels.
The motto of Yarra Trams is 'Love Your Trams'.
Trams were used in Auckland between 1902 to 1956. (Electric trams).
Trams in Milan was created in 1876.
Yarra Trams was created in 1999.
Trams in Turin was created in 1871.
Inekon Trams was created in 2001.
Wikipedia provides information about the history of trams. One can also look on Railpage, Yarra Trams, and Groundwork East Midlands for information about the history of trams.